Place all of the ingredients into a high speed blender.
Process until smooth.
Notes
Please don't replace the silken tofu with any other kind of tofu. The recipe only works with silken tofu.
I like to add garlic to my sour cream for more flavor. If you're not a fan of garlic or if you want a more simple and plain version, just leave it out.
If you're looking for a vegan sour cream with cashews, I included a recipe in my taco recipe.