Sunday, November 8, 2026

What about fats and oils?

There are large numbers of people who are new to war-gaming "famine" scenarios. I feel compelled to throw a stake into the ground to, maybe, provide some perspective.

There is a spectrum of scenarios that range from long-term, total collapse of civil society on one end while the other end is characterized by a weakened safety-net that allows the most fragile and isolated to fall through the cracks and die from malnutrition. 

The middle-range is some combination of reduced supply/choices, reduced logistical capability or increased demand/prices...but there are still remnants of social structure that prevent total free-fall of food availability. Versions of the second scenario are what happened in the U.K., Germany and the US during WWII.

It is imperative that the planner communicate a clear vision of the scenario he is planning for. Plans that are useful for one group of scenarios may be wasted effort for other scenarios.

This particular post looks at a scenario that is somewhere in the middle of the famine spectrum. 

In my humble opinions, the responsible "prepper" position is to position one's pantry and garden so that we can reduce our burden on the struggling system. It doesn't necessarily mean that we will be totally decoupled from it. It means that we will do as much as we can so that there is more for those who actually need it.

Peering into my crystal ball

Likely to be available:

  • Carbohydrates, grains
  • Cheese
  • Dried soybeans

These are logistically "easy" and the path-of-least resistance for people trying to backstop shortages. 

Likely to be in short(er) supply

  • Protein (other than cheese) from animal sources
  • Fresh fruits and vegetables
  • "Human-quality feed" for animals (bagged feed for chickens, pigs)

These are logistically more difficult due to being perishable, bulk and cost. 

Likely to be spot shortages

  • Convenience foods: Frozen, ready-to-eat meals
  • Meals prepared outside of the home 
  • Flavorings: garlic, onions, peppers, herbs, spices
  • Fats and oils
  • Comfort items like candy, sugar, alcohol, tobacco, cannabis

Dietary disruptions

Rapid changes in diet will cause intestinal distress. Switching from a diet where 45% of ones' calories come from fats-and-oils to a diet heavy on grains, especially if they are high fiber, will incapacitate some people.

Another factor is that some people will be forced to become less sedentary and will need more calories. Increased need for calories combined with food with fewer calories per unit volume will compound the problems in the lower digestive system.

Bureaucracies being what they are, nearly everybody who is not a child, pregnant/nursing or working in an "essential industry" will be tagged as "low needs" and be allocated a ration of 2000 Calories/day which is great for a sedentary, 150 pound woman but woefully short for an active man who weighs 200 pounds.

Some of the difference will come from the fat-on-our-back, but that eventually runs out. A person burning 2800 Calories a day but only eating 2000 Calories a day will lose one pound of body-fat every five days. When he runs out of fat he starts metabolizing muscle.

Back to fats-and-oils

A source of supplemental fats-and/or-oils is the logical choice to increase the ration's calories without grossly increasing the bulk in your digestive system.

As a planning exercise, let's assume 

  • Everybody is allocated 2000 Calories a day in tortillas, bread, breakfast cereal like substances by FEMA
  • Assume that your household is mixed, half only need 2000 Calories a day and half need at least 2800 Calories a day so the average need is 2400 Calories per day
  • At 9 Calories per gram, a budget of 45 grams of additional F&O per person-day is a reasonable starting place for this scenario.
  • A gallon of vegetable oil weighs 7.6 pounds and represents about 75, 45 gram doses. That is very, very close to the volume of a shot-glass.
  • Ergo, one gallon of oil or 7.6 pounds of butter/lard/tallow represents slightly more than two people-months of supplemental F&O. In a scenario without external ration support, it represents half that time. 

If the crisis is short-term, then a person burning 2800 Calories a day can easily make it through a month and will lose about ten pounds. Not a big deal. For most of us, a six month disruption means we are deeply into losing muscle.

A few parting thoughts

Written narratives of wars almost always record extreme optimism about how short of a period the war will last. The American Civil War was supposed to be over in a matter of weeks. WWI and WWII were expected to only last a few months. In fact, each of those wars lasted more than four years AND the impacted areas were in-crisis due to demolished infrastructure and lack of manpower for a like period of time. That tots up to about a decade of hunger.

Looking at Cuba, the people are still impoverished 65 years after their color revolution. From another perspective, American Indians are still impoverished 200 years after losing their war.

Another consideration is that a stick of margarine (2.5 man-days supplemental amount) or a 1/4 liter of oil (half a standard "water bottle" represents 5 man-days of supplemental amount) might be a half-a-day's and a day's wages for outside help. It is a commodity that is easily divisible, a durable store of value and can be traded by the person who receives it for other things they need. It  has intrinsic value. That is, it has enough of the characteristics of money to be a serviceable substitute for it.

Summary

One gallon of vegetable oil represents about 2 man-months* of calorie supplementation for a "buffered" economic crash and 1 man-month of supplementation for an unbuffered crash. At current prices, a gallon of name-brand, long shelf-life** vegetable oil (Wesson) costs $13/gallon at our local Walmart.

Oils and fats go rancid when exposed to oxygen, so thought must be given to storage. Rancid oils are not toxic but have a much lower smoke-point when used in frying and might cause digestive distress when consumed in large quantities.

*Remember, this scenario assumes a household of one man and one woman in traditional roles. If you are a single guy then you might want to double that amount/person. If you are a single woman you might want to halve that amount. 

**Breeders have been selecting soybean genetics that have reduced amounts of linolenic acid in their oil molecules. Linolenic acid is the component that oxidizes the most quickly and is the main driver of oil turning rancid.

Quick chemistry lesson: Edible fats and oils are a glycerine molecule with three short, fatty acids attached to it. Think if it as being like the letter 

"E" 

where the backbone (the vertical line) is the glycerine molecule and each horizontal line is a separate fatty-acid.

Fatty acids that are saturated are straight lines and the molecules pack easily. Consequently, they turn solid at higher temperatures than "E" molecules made with kinky, unsaturated fatty acids.

The more highly unsaturated the acid (i.e. poly unsaturated), the less stable that horizontal arm is and the more susceptible it is to partial oxidization...that is, becoming rancid.

The actual mix of short, fatty acids varies by the genetics of the plant. There are strains of sunflowers and soybeans that produce oils that are low in Linolenic and high in Oleic short, fatty acids. Those oils exhibit shelf-life that is significantly longer than oils made from traditional sunflowers and soybeans. 

As a consumer, you can read the "Best by" dates and select the brands with the longest storage horizon. You can store them in cool, dark places. You can repackage them in glass which excludes oxygen. All of those moves should significantly increase the shelf-life of your oils.

Or, you can store tallow, coconut oil(fat) or clarified butter. Since they are very high in stearic acid, they are relatively impervious to oxidizing. They are, however, very high in saturated fats which has been linked to cardiovascular disease. Get educated and make your own decisions.

 

20 comments:

  1. I keep some fats in my dark storage : Crisco, lard, tallow, extra vegetable oil. Easier to do now, as lard and tallow are available in store. Not great, but I expect shortages.
    Southern NH

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    1. It is with some disappoint that I have noticed over the years the decreasing availability of tallow. Not only recently but steadily over, say the past thirty years. Even in cow country in the West. YMMV

      I wonder if it is a result of corporate mergers.

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    2. No idea, obviously. I have a little home canned tallow from some beef I had. I noticed tallow on shelves near the lard, but haven’t looked lately. I need to increase my supplies.
      SNH

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  2. The Italians still pack a great deal of olive oil in steel cans. Olive oil packed in steel cans seems to last forever.

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    1. You are my designated "Material Science" guy (among other things).

      Not all types of rubber are compatible with all types of hydrocarbons. Can you provide any insight regarding the expected durability of the rubber printed on the bottoms of sealing-lids when exposed to vegetable oil?

      Very highest regards,

      -Management

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    2. Quite a few different "rubber" compositions have been approved by FDA for use with food. Natural Rubber, Pure Gum Rubber, EPDM, Thermoplastics, Neoprene, and Nitrile (Buna N) are the common FDA approved non silicone "rubbers". Viton, Various Fluoroelastomers, and Red Silicone are the FDA approved silicone rubbers. Food grade polyethylene (LDPE & HDPE) and polypropylene are also used for sealants and spouts.

      The natural rubbers are not suitable for contact with most types of oils - food or mineral. Many of the other non silicone rubbers are suitable for neat vegetable oils, but not if they have significant rapeseed or oleic acid contents (most do). The silicone rubbers are well suited to almost all vegetable oils, as are LDPE plastics. Both are unaffected by oleic acid and rapeseed oil.

      The chemical compatibility charts for FDA approved rubbers run to 20 pages or more and should be consulted for specific combinations. Silicone rubber is your friend in most cases, but not all. It deteriorates in reducing acids (phosphoric [think Colas], oxalic) and concentrated saline solutions.

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  3. I am not concerned of running out of food beyond adequate amount of protein. Of course, with effort plentiful animal protein can be secured. Staving off spoilage is always a concern. Bulk items packaged for individual meals is one solution. There is the concern for 'shelf stable' which is where a root cellar, as example, offers great benefit. The heartbreak of seeing large amounts of inventory become contaminated is real.

    More concerning is good practices for hygiene and laying in a supply of medicinal products.

    Many moons ago I was a shift chemist in producing vegetable oils and byproducts. With few exceptions there are no difference between brands. The same blend/formula/recipe would sport different labels for retail sales.

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  4. Hmmm... 2500 Calories per day X 365 days = 912500 Calories per year. I round that off to a cool o e million to include my birthday cake. Sobering.

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  5. One U.S. gallon of diesel contains approximately 146.52 megajoules of energy.

    Estimated embodied energy: ~60–100 MJ/L (commonly ~75 MJ/L)
    ResearchGate

    This means producing 1 liter of canola oil typically requires more than twice the energy it contains as fuel, though the exact figure depends on the supply chain and processing efficiency.

    So, between tractors planting, spraying herbicides, pesticides, harvesting, processing for factory, power to run the oil extraction and bottling and finally trucking to your store.

    You get about 2 liters of canola oil per gallon of Diesel equivalent.

    AND there is this little issue of warfare disturbing the production of oil, sulfur, urea, natty gas and fertilizer production...

    Brings us to this bit of near future trouble:

    https://sonar21.com/full-refineries-empty-tanks/

    Read the whole thing please. Our refineries are running full tilt, yet because of demand and overseas sales our reserves of diesel and heating oil isn't there.

    And that's despite good luck in the hurricane season that no refineries were put out of service. Hope no required shutdowns for repairs will be coming.

    Mr. Winter gets a vote here I suspect.

    As our socialist democrats are rather anti-oil and such, I suspect the fuel prices of Diesel (and heating oil, etc.) to be more expensive due to green legislation.

    The Cooking OIL on the shelves is LAST YEARS PRODUCTION.

    About November the current harvest and its costs will be on the shelves.

    Tempus fugit.

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    1. Something is wrong with your math. Canola typically requires less than 10 MJ per gallon (2.5 MJ/l) in total energy inputs, all the way through processing, packaging, and delivery. Canola generates about 160 MJ per gallon (40 MJ/l) as a combustion fuel.

      Canola ran the entire ground war machine of the Germans during WW II. Diesel, vehicle lubricants, metalworking lubricants, and cooking oils. It was very energy efficient.

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    2. I asked the AI what was the embodied energy in a liter of canola oil. Then the energy in a gallon of Diesel.

      Posted the math.

      Please show me different because by your math we should be growing Canola and using it instead of diesel, given our heating fuel-diesel issues.

      Still the point is cooking oils will become more expensive this fall. I've seen the differences from this spring already.

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    3. Best evidence is in a Turkish paper: 'An assessment of energy use of different cultivation methods for sustainable rapeseed production' by Kusek, Ozturk, and Akdemir. They find rapeseed cultivation's energy output/input ratios to be 7.24, to 7.55, depending upon tillage practice. Their yields per acre are lower than American and Canadian yields because they grow winter rapeseed, which North American practice is to grow Spring rapeseed. Rapeseed also produces higher yields in more northerly latitudes.

      The Turkish tests produced 2,500 pounds of rapeseeds per acre, seeds which averaged 42% oil by weight. No till practices were inferior to tillage practices due to loss of soil nutrients to weeds.

      Think your AI model dished up the energy use values for corn (maize), which are about 7 times higher than oil seed values. The major differences are corn's much higher fertilizer requirements and the energy required to dry corn.

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    4. Since I don't have access to this paper could you run the numbers to see how many liters of finished canola oil per gallon of diesel used please.

      Would be amusing if the greenies are right and growing canola to fuel the machines to grow more canola was reality.

      I'm curious as Germany did use canola oil as well as the coal to liquid process as they had inadequate oil production.

      It wasn't a matter of efficiency per say, it was making useable fuel anyway we can as to keep our war machine going.

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    5. "Liters of finished canola oil per gallon of diesel" is a fiction because much of the energy used to grow rapeseed comes from natural gas which has been transformed into fertilizer. Diesel oil is not used to make ammonia (the precursor for nitrogen fertilizers) via the Haber–Bosch process. Natural gas or coal are the preferred feedstocks.

      A ball park number based on diesel equivalent energy content would be about 25 liters of canola oil from the energy content of a gallon of diesel. This number could range from 15 to 30 liters, depending upon the vagaries of rapeseed cultivation. Interestingly, rapeseed cultivation requires more sulphur than any other agricultural product. This sulphur comes primarily from the purification of diesel oil, so there is a connection.

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    6. Energy inputs are energy 10X25mm.

      I am curious if the useable by farm tractor-Semi energy of that 25 liters of canola is better than the gallon of diesel used.

      I was playing with used cooking oil and a diesel car some years ago. I didn't have to pay the energy cost of the waste BUT the Processing from cooking oil to useable fuel was "interesting".

      The site I used just converted natty gas used and so forth to diesel as a measuring stick.

      If a "Central Planner" (and we all know the "Successes of Soviet 5 year plans, right?) thinks we have plenty of natty gas (SO GREEN) yet distains nasty ole diesel THINKS-PLANS we have plenty of energy for the canola crop.

      Pity the diesel tractors cannot run on natty gas.

      Vice versa for fertilizers, herbicides and sulfur.

      My point was and is still that easy CHEAP Eating Oils are directly LINKED to cheap and plentiful oil, sulfur and other things that the CURRENT Little Non-War (Per Trump) is crapping on.

      While I love Joe's perennial optimism that things are going to have "Spotty shortages" and sensible preppers should prep to EASE the stress on the food system...

      We so easily forget both the COVID "Supply Chain Disruptions" of say Toilet Paper was resolved by BUYING TP from other countries (and putting that shortage on the lesser countries. Yeah, I still have some Mexican TP from that time (thin and crude).

      Same with other needful items.

      That OPTION might not be so available this round as our political class "Betters" the Dems that ran on "Affordability" are telling Trump and his supporters to "Lawyer Up".

      So, nasty ole partisan politics might be in play about things like food grade oils.

      They store well and I suspect given last year's prices (CURRENT STOCK on shelves now) were partly from LAST Years Diesel and Fertilizer costs that come about Late Nov-Dec that those prices will reflect this Years production.

      I also noted over the last couple of weeks that several local stores were a bit thin and product "Fronted" to make the cheaper cooking oils shelves look fuller.

      BTW Joe, can I suggest adding some Vitamins to your larder? Vit C, D and a good multi might be useful if the diet has gaps in it. A years supply is pretty cheap.

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    7. "Pity the diesel tractors cannot run on natty gas."

      Large bore natural gas engines like the Cummins X15N could power tractors. Engine designers gave up on compression ignition natural gas engines because they did not achieve the torque rise of diesel fueled CI engines. Advances in spark ignition engine management have allowed natural gas fueled SI engines to just about match CI diesel engine torque rise.

      The only real impediment to natural gas fueled farm machinery now is the logistics of fuel delivery and storage. Farms are set up to run on diesel fuel.

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    8. The City of Eaton Rapids has two, Fairbanks-Morse, opposed piston, two-stroke, NG fueled, diesel injection ignition back-up electrical generation. It takes just a tiny bit of diesel injected at high pressure to initiate the combustion of the air/NG mix.

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    9. The Fairbanks-Morse 38 8-1/8 engine is a licensed version of the 1930's Junkers Jumo 205 aircraft diesel engine. Fairbanks-Morse created the dual fuel technology to run the 38 8-1/8 engine on diesel and natural gas in the 1990's. FMDefense still manufactures this engine in Wisconsin for stationary power applications. It lacks the torque rise necessary for tractive service.

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  6. That’s one reason mountain men and long hunters targeted fall bears. You can render the fat as well as eat the meat!

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