Whole Milk and Butter (Best Option)
3/4 cup whole milk + 1/4 cup melted butter per 1 cup heavy creamHeavy cream is approximately 36-40% fat, which contributes to the moistness and richness of vanilla cake. Combining whole milk (about 3.5% fat) with melted butter (100% fat) recreates this fat content and liquid balance, ensuring the cake batter maintains proper consistency and richness.
For best results, melt the butter and mix it thoroughly with the milk before adding to the batter to avoid separation. Use at room temperature to blend smoothly.
The final cake will have a texture and flavor very close to the original recipe, with minimal impact on crumb softness or vanilla flavor.