Watermelon Barbecue Sauce

Watermelon Barbecue Sauce
1 - 6 Pound Seedless Watermelon chunk 8 Ounces Tomato Paste 1 Tablespoon Onion Powder 1 Tablespoon Garlic Powder 2 Cups Firmly packed brown sugar 1/2 Cup Sherry 2 Teaspoons Lemon juice 1 Teaspoon Liquid smoke Cut the melon into pieces and place in a saucepan.Cook it uncovered over medium heat until the melon is the consistency of applesauce (approximately 2-3 hours). Stir it occasionally. Add remaining ingredients. Simmer uncovered over low heat for 2 hours. Allow to cool to room temperature before using.