Sour Cream & Chive Sprinkle

While specific ingredients vary by manufacturer and product, a typical sour cream and chive sprinkle or seasoning includes a base of dried dairy products and common flavorings.
Common ingredients
Sour cream powder: This is a dehydrated version of sour cream.
Chives: These are included in the seasoning as dried herbs.
Salt: A standard seasoning component.
Onion powder: Adds a savory, onion flavor.
Garlic powder: Provides a savory, garlic flavor.
Sugar: A touch of sugar can balance the flavors.
Dextrose: A type of sugar that can act as a flavor enhancer.
Maltodextrin: A thickening agent and bulking ingredient.
Yeast extract: Often used as a flavor enhancer.
Anti-caking agent: Prevents the powder from clumping.