Substitutions
Soaked soybeans blended with water and strained. The highest-protein plant milk and the most functionally similar to dairy.
What it does in a recipe: Plant liquid with enough protein to brown, set and curdle like milk does. Pick the swap that covers that job - the ratios below are written so you can act on them without doing any arithmetic.
Quick answer
Oat milk
1 cup soy milk = 1 cup unsweetened oat milkAll substitutes, best first
1 cup soy milk = 1 cup unsweetened oat milkThe closest plant milk in body and the most neutral in flavour, though it carries less protein.
Trade-offWill not curdle into a plant buttermilk as convincingly, because there is less protein to coagulate.
Allergen checkMost oat milks are not certified gluten-free. Check the carton.
1 cup soy milk = 1 cup unsweetened pea milkThe only widely available plant milk that matches soy's protein content, which makes it behave similarly in baking.
Trade-offSlightly savoury and thicker.
1 cup soy milk = 1 cup whole milkBehaves nearly identically in cooking and baking, since soy milk is chosen precisely for its dairy-like protein.
Allergen checkNot a swap where dairy avoidance or a vegan diet is the reason for using soy milk.
At a glance
| Category | Dairy & milks |
|---|---|
| Job in a recipe | Plant liquid with enough protein to brown, set and curdle like milk does |
| Suits | Vegan, Vegetarian, Gluten-free, Dairy-free, Egg-free, Nut-free |
| Swaps available for | Dairy-freeEgg-freeGluten-freeNut-freeSoy-freeVeganVegetarian |
| Number of substitutes | 3 |
Questions
1 cup soy milk = 1 cup unsweetened oat milk. The closest plant milk in body and the most neutral in flavour, though it carries less protein. Will not curdle into a plant buttermilk as convincingly, because there is less protein to coagulate.
1 cup soy milk = 1 cup unsweetened pea milk. The only widely available plant milk that matches soy's protein content, which makes it behave similarly in baking. Slightly savoury and thicker.
1 cup soy milk = 1 cup whole milk. Behaves nearly identically in cooking and baking, since soy milk is chosen precisely for its dairy-like protein.
Related
Cooking around an allergy? Diet tags here describe the ingredient itself, not any particular brand. Processed products change formulation without notice and shared production lines are common, so read the label on everything you use. A severe allergy is a medical matter - confirm with the manufacturer or your clinician rather than relying on a substitution chart.