Kahlua Mousse
["2 egg yolks", "1 1/2 tsp. sugar", "2 egg whites", "2 Tbsp. Kahlua liqueur", "1/4 c. butter", "3 oz. semi-sweet chocolate", "1/4 c. sugar", "2 Tbsp. Kahlua liqueur", "1 c. whipping cream", "mint leaves and mint chocolate sticks (for garnish)"]
["Beat egg yolks and 2 tablespoons Kahlua in a 3-quart microwave-safe dish. Add 1/4 cup sugar.", "Beat until slightly thickened and color lightens. Cook egg yolk mixture on Medium-high power 3 to 4 minutes until thickened. Stir every 45 seconds. Set dish in a bowl of cold water.", "Beat until thick, 3 to 4 minutes."]
["egg yolks", "sugar", "egg whites", "Kahlua liqueur", "butter", "semi-sweet chocolate", "sugar", "Kahlua liqueur", "whipping cream", "mint"]