Toss shredded cheeses together by hand in a large bow
Mix together sour cream, mayonnaise, garlic, cayenne pepper or paprika, and salt in a small bowl. Add to the cheese, stirring gently to mix well. Cover and refrigerate at least 4 hours (preferably overnight) for the flavors to meld. Let cheese come to room temperature before serving.
Use as a stuffing for small firm ripe tomatoes or cherry tomatoes, as a spread for dark bread, or as a topping for baked potatoes. Garnish with fresh chives, green onion tops, or wild garlic leaves if desired.
