Out of sour cream? Use 1 cup plain Greek yogurt for 1 cup sour cream. Plain, full-fat yogurt is the closest match for dips, batters and sauces.
1 cup sour cream = 1 cup plain Greek yogurt (full-fat is closer)
Good for dips, batters and sauces. Tang and texture vary, and yogurt is usually a little less rich, so taste as you go.