โญ Coconut milk with lemon juice (Best Dairy-Free Option)
1 cup coconut milk + 1 tbsp lemon juice per 1 cup buttermilkCoconut milk provides the fat content and creaminess similar to buttermilk, while lemon juice adds acidity to balance the tomato's natural tartness. The plant-based fat helps maintain sauce texture.
Use full-fat coconut milk and stir well with lemon juice before adding. Be mindful of the slight coconut flavor, which may alter the sauce's traditional taste.
The final sauce will be creamy and balanced in acidity but with a mild coconut undertone, which can complement some tomato sauce variations.