โญ Soy Milk (unsweetened, plain) (Best Vegan Option)
1 cup soy milk per 1 cup whole milkSoy milk contains proteins and fats similar to cow's milk, making it a good dairy-free alternative that maintains the cake's moisture and crumb structure. Its neutral flavor allows the vanilla to shine.
Choose unsweetened and unflavored soy milk to avoid off-flavors. Be aware that soy milk is slightly thinner than whole milk, so the cake may be marginally less rich.
The final cake will be slightly less rich but still moist and tender, with a subtle difference in mouthfeel.