Place sour cream in a small mixing bowl. Add dried chopped onion, Herb Ox Bouillon, onion powder, garlic powder, black pepper, and parsley. Mix together very well until completely uniform and smooth. Taste and adjust seasonings if needed, but best flavor blends overnight.
Refrigerate for at least 1 hour to allow the flavors to come together for best taste. And also to allow the dried onion to soften and partially re-hydrate. Store in the refrigerator for 5–7 days.