What to use instead of sour cream or yogurt when a recipe as for it?

Here's a breakdown of substitutes for sour cream and yogurt, depending on what you're making:

Sour Cream Substitutes:

* Plain Greek Yogurt: Works best in savory dishes where you need tanginess and thickness. Use a 1:1 ratio.

* Cream Cheese: A good substitute for baking, but adds more richness. Use 1/2 cup cream cheese for 1 cup sour cream.

* Mayonnaise: Can be used in a pinch, but will change the flavor profile. Use 1/2 cup mayonnaise for 1 cup sour cream.

* Buttermilk: Adds tanginess and can be used in baking, but can make the dish more dense. Use 1:1 ratio.

* Heavy Cream: Adds richness, but lacks the tang. Use 1 cup heavy cream + 1 tablespoon lemon juice for 1 cup sour cream.

* Milk + Vinegar or Lemon Juice: Creates a similar texture and tanginess. Use 1 cup milk + 1 tablespoon vinegar/lemon juice for 1 cup sour cream.

Yogurt Substitutes:

* Sour Cream: Works well in sweet dishes like smoothies or dips. Use 1:1 ratio.

* Milk: Will thin out the dish. Use 1 cup milk + 1 tablespoon lemon juice for 1 cup yogurt.

* Cream Cheese: Adds richness and a tangy flavor. Use 1/2 cup cream cheese for 1 cup yogurt.

* Silken Tofu: Works well in smoothies or dips, but will change the flavor profile. Use 1:1 ratio.

Things to Consider:

* Flavor: Each substitute will change the flavor profile of your dish.

* Texture: Some substitutes will make your dish thicker or thinner than intended.

* Baking: Some substitutes will affect the baking process.

Always adjust the amount of substitute to your liking and taste. Don't hesitate to experiment and find what works best for you!