Meanwhile, prepare the Blackberry Hoisin Ginger Glaze by melting 1 tablespoon butter in a small saucepan over medium heat. Add garlic, ginger and red pepper flakes and saute for 30 seconds. Stir in blackberry preserves,
hoisin sauce, red wine vinegar, salt and pepper. Taste and add more red pepper flakes if desired, remembering that the glaze will be less "spicy" because only a little is drizzled over each serving.