⭐ Non-Dairy Milk + Lemon Juice or Vinegar (Best Dairy-Free Option)
1 cup unsweetened soy or oat milk + 1 tablespoon lemon juice or white vinegar (let sit 5 minutes) Quick tip: Dairy-free option that replicates acidity and moisture, but flavor varies by milk base.
The acid curdles the plant-based milk, creating a similar acidic environment to buttermilk that activates baking soda. Soy and oat milk have protein content closer to dairy milk, helping maintain structure.
Let the mixture sit for 5 minutes before use to allow curdling. Avoid sweetened or flavored plant milks to prevent flavor interference.
Muffins will be slightly different in flavor and may have a less rich mouthfeel, but will retain good rise and moistness.