In a bowl fitted with an electric mixer, cream together the goat cheese, cream cheese, mascarpone and liqueur.
Working 1 at a time, spoon about 2 teaspoons of the cheese mixture around each grape, rolling between your hands to coat evenly. Place on a dish and refrigerate until slightly set, about 20 minutes.
In a shallow dish, place the pecans. Roll the cheese-coated grapes in the pecans and place on a platter. Chill until set 30 minutes to 1 hour. Serve.
Yield: about 75 servings