Soybean Oil

Soybean oil is the second of the big four vegetable oils, the quartet of palm, soybean, rapeseed/canola, and sunflower that together are more than 90 percent of world vegetable oil (see the breakdown pie). It is the second most produced after palm, roughly 62 million tonnes a year, and it underwent the most dramatic rerating in agriculture in the 2020s. For decades bean oil was the lower-value crush product, a cooking oil competing with palm and canola on grocery economics. Then US renewable diesel capacity, propelled by California's Low Carbon Fuel Standard and federal blending credits, expanded several-fold between 2021 and 2024, and refiners discovered they could hydrotreat vegetable oil into drop-in diesel. Soybean oil futures, which had spent years in the 30s of cents per pound, ran to roughly 90 cents in mid-2022. Biomass-based diesel now consumes roughly half of US soybean oil production, and the CBOT oil contract trades off EPA blending mandates, the 45Z clean fuel tax credit, and crude oil as much as off crop weather.

The repricing rewired the whole oilseed complex. Crushers built new plants to chase oil value, the oilshare (oil's share of total crush product value) climbed from roughly a third toward half, and the meal market inherited the surplus. Globally, bean oil trades in a tight substitution web with palm oil, the volume leader from Indonesia and Malaysia, and with rapeseed and sunflower oil from the Black Sea; the palm-soy spread is the market's daily arbitrage. Argentina is the largest exporter of soybean oil itself, while US production increasingly stays home for fuel. The contract is 60,000 pounds, quoted in cents per pound, physically delivered, and its policy sensitivity, one EPA volume announcement can move it 10 percent in a session, makes it the most Washington-driven contract in the grain room.

How does a cooking oil end up supplying close to a tenth of the calories people eat directly, as the calorie pie below shows? Vegetable oil is the most energy-dense food there is, roughly 120 calories in a single tablespoon and about 884 calories per 100 grams, pure fat with no water or fiber to dilute it. Almost none of that is the film left in the pan. The calories ride into the diet inside the food itself: oil soaked up by anything deep-fried or sauteed, the fats folded into baked goods, margarine and shortening, dressings and mayonnaise, and above all the packaged and restaurant food that dominates modern eating. Global vegetable-oil use per person has roughly tripled since the 1960s, which is why oil is a far bigger source of calories than its place on the table suggests. It is fair to ask why so little of this concentrated energy goes to livestock, and the answer is economics and biology. The cheap energy in animal feed comes from grain starch, which costs far less per calorie than refined oil, so a soybean's feed value is captured in the protein-rich meal that is about 80 percent of the crush, while the oil is split off as the higher-value human and fuel product. Ruminants reinforce the point: their rumen microbes tolerate only a few percent added fat before fiber digestion suffers, so the fats actually fed to animals are small supplements, usually cheap tallow or recycled grease, not food-grade vegetable oil.