Irish Cream Cold Brew

Name: Irish Cream Cold Brew
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Cuisine: British
Ingredients: ½ cup sugar; ½ cup water; ¾ teaspoon unsweetened cocoa powder; ¾ teaspoon instant espresso powder; 1 teaspoon vanilla extract; 1 teaspoon Irish whiskey (optional); ½ cup whipping cream; 1 tablespoon Irish cream liqueur (or Irish cream syrup (see note)); 1 tablespoon sugar; 10 ounces cold brew coffee; ½ ounce Irish cream syrup; ¼ cup Irish Cream Cold Foam