Tomatillo Barbecue Sauce

Ingredients

• 2 1/2 pounds green tomatoes, coarsely chopped
• 1 1/2 pounds tomatillos, husked and coarsely chopped
• 2 garlic cloves, pressed
• 1/2 to 1 cup sugar
• 1 cup white vinegar
• 1 large sweet onion, coarsely chopped (about 1 1/2 cups)
• 1 tablespoon dry mustard
• 1 teaspoon salt
• 1/2 teaspoon dried crushed red pepper