How to Substitute Mayonnaise for Sour Cream

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If you are in the middle of making a salad, dip or even baking a cake and discover you do not have the right amount of sour cream, there is no need to run to the store to finish your recipe. You may equally substitute mayonnaise, sour cream, yogurt or pureed cottage cheese when your recipe calls for one of these ingredients, according to Colorado State University Extension. For example, you may replace 1 cup of mayonnaise for 1 cup of sour cream. In addition, mayonnaise and a couple of other ingredients enable you to make your own sour cream, with a similar taste.

Step 1

Measure equal amounts of heavy cream, mayonnaise and plain yogurt. Place each into the blender.

Step 2

Turn on the blender to medium and mix until well combined. If you do not have a blender, place ingredients into a mixing bowl and whisk until combined. The result will be a creamy, light consistency -- similar to sour cream.

Step 3

Place the finished mixture into a container with a lid. Use equal amounts of this homemade sour cream in place of traditional sour cream in your recipe.

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