01
Black Beans
10.0best for soup1 cup : 1 cup
Firmer and meatier; soak dried or use canned, hold shape well in chili and rice bowls
10.0
soybeans substitute
in soup.
In Soup, Soybeans provide protein and body that shape the broth and body. They release starch as they cook, naturally thickening the broth, while their protein stays intact through long simmering; a swap must supply comparable starch and protein so the soup achieves the same hearty consistency without added thickeners.
top substitutes
adjustment for this dish
Black beans thicken a broth faster than soybeans, giving up around 12% of their mass as starch in the same 90-minute simmer; swap 1:1 cup but increase stock by 3/4 cup per 6-cup pot to preserve the body without the broth turning gluey when you reduce.
02
Kidney Beans
10.0best for soup1 cup : 1 cup
Larger and starchier; similar protein, holds up in chili and stews but mushier when overcooked
10.0
adjustment for this dish
Kidney beans hold shape through a long simmer where soybeans soften to paste; for a 1:1 cup swap, extend cook time by 15 minutes and blend 1.5 cups with stock (instead of soy's 1 cup) to hit the same silky body, since their skins resist breakdown even at 195°F.
03
Pinto Beans
10.0best for soup1 cup : 1 cup
Creamy and mild; mash for refried-style dishes or use whole in soups and chili
10.0
adjustment for this dish
Pinto beans carry an earthier flavor and release starch evenly; keep the 1:1 ratio but pull the salt forward to the 20-minute mark (vs soybeans' final 10 minutes) because pinto skins tolerate salt earlier without toughening, giving the depth a cleaner arc.
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04
Peanuts
3.31 cup : 1 cup
Roasted soy nuts; similar protein content
3.3
adjustment for this dish
Peanuts turn a broth cloudy from their oil (vs soybeans' clean starch thicken) and will float fat to the surface; use a 1/2 cup swap per 1 cup soybeans, skim aggressively every 10 minutes, and finish with a squeeze of lime to cut the oil that otherwise coats the warm bowl.
technique for soup
technique
Soybeans contribute both body and protein to a soup by releasing roughly 8% of their mass as starch slurry during a 90-minute simmer, which thickens the broth without a roux. 5 cups pre-soaked soybeans and simmer covered at 195°F — a full boil splits the skins and turns the soup cloudy rather than silky.
Skim the foam that rises in the first 20 minutes or your broth will taste bitter. For a creamier texture, blend 1 cup of the cooked beans with a ladle of broth and stir back in to reduce the whole pot by about 15% in perceived body.
Season with salt only in the last 10 minutes; added early, salt hardens the skins and doubles your cook time. Warm bowls in a 170°F oven for 5 minutes before serving so the depth doesn't drop the moment you pour.
Unlike meatloaf where long-cooked soy turns to paste, soup rewards exactly that breakdown — it's where the stock and bean become one thing.
pitfalls to avoid
watch out
Don't bring the pot to a rolling boil — hold it at 195°F simmer or the skins burst, the broth clouds, and you lose the silky body soybeans should give.
watch out
Avoid salting in the first 30 minutes; early salt toughens the skins and the beans need an extra 40 minutes to soften, flattening the depth.
watch out
Skip blending the entire pot if you want texture contrast; blend 1 cup of beans with stock and stir back for body while leaving the rest whole.
watch out
Don't forget to skim foam in the first 20 minutes of simmer; unskimmed scum reduces into the broth and leaves a bitter edge on every spoonful.
watch out
Reduce the aromatics' cook time to 4 minutes before adding stock — past that the onion browns and the soup tastes muddled rather than clean.