This vegan sour cream recipe is the perfect substitute for the original version. It's thick, creamy, and comes together with 6 simple ingredients. Raw cashews are what gives this vegan sour cream is smooth, creamy texture. Make sure to use unsalted so you can control the saltiness. I buy my cashews in bulk at Thrive Market or the grocery store. If you can't have cashews, use slivered almonds as an alternative.