5 Best Buttermilk Substitutes for Smoothie

Quick tip: Diluting yogurt with water achieves a similar consistency and tang, keeping the smoothie smooth and creamy without heaviness.

Plain yogurt contains live cultures that provide the tangy flavor characteristic of buttermilk, and its creamy texture helps maintain the smoothie’s body. Diluting it with water adjusts the thickness to match buttermilk’s pourable consistency.

To ensure a smooth blend, use plain yogurt without added flavors or sweeteners and mix thoroughly with water before adding to the smoothie. Avoid Greek yogurt unless heavily diluted, as it is thicker.

The final smoothie will have a slightly richer mouthfeel than buttermilk but will retain the desired tanginess and smooth texture, making it the closest match in flavor and consistency.

Quick tip: Kefir is naturally thin and tangy, providing a probiotic boost and a texture very similar to buttermilk.

Kefir is a fermented milk drink with a tangy flavor and a thin consistency, making it an excellent substitute for buttermilk in smoothies. Its probiotic content can also add health benefits.

Use plain, unsweetened kefir to avoid altering the smoothie’s flavor profile. Shake well before use to ensure even consistency.

The smoothie will have a slightly more pronounced tang and a smooth, drinkable texture very close to that of buttermilk.

Quick tip: This dairy-free option adds acidity but is thinner and less creamy, which may slightly affect smoothie texture.

Adding lemon juice to almond milk creates a mild acidic reaction that mimics the tanginess of buttermilk. Almond milk’s natural sweetness and thin texture make it suitable for smoothies, especially for those avoiding dairy.

After mixing, let the almond milk and lemon juice sit for 5 minutes to curdle slightly before blending. Use unsweetened almond milk to avoid unwanted sweetness.

The smoothie will be lighter and less creamy than with buttermilk, with a subtle nutty flavor and a tangy note, making it a good vegan and dairy-free alternative.

Quick tip: Adds creaminess and acidity but imparts a coconut flavor that may alter the smoothie’s taste profile.

Coconut milk provides a rich, creamy base, while apple cider vinegar introduces the acidity needed to replicate buttermilk’s tang. This combination works well in smoothies where a tropical or coconut flavor is complementary.

Mix and let the mixture sit for 5 minutes to allow curdling before use. Use full-fat coconut milk for best texture.

The resulting smoothie will be creamy with a distinct coconut undertone and a tangy finish, which may not suit all flavor profiles but works well in tropical or fruit-forward smoothies.

Quick tip: Provides acidity and protein but can have a slightly beany flavor and thinner texture.

Soy milk is higher in protein than many plant milks, which helps mimic buttermilk’s mouthfeel when acidified with vinegar. The vinegar adds the necessary tanginess.

Allow the mixture to sit for 5 minutes before using to let it curdle slightly. Use unsweetened soy milk to avoid flavor interference.

The smoothie will be thinner and may carry a mild beany taste, which can be masked with strong fruits or flavorings but is less neutral than dairy-based substitutes.