The Waterford Lismore pattern is a stunning combination of brilliance and clarity. Designed especially for steaming, aromatic Irish Coffee, these Lismore Irish Coffee glasses feature an elegant footed base with incorporated handle and a gently rounded hourglass bowl intricately detailed with the Lismore pattern"s classic diamond and wedge cuts. The thickness and comforting weight of Waterford"s hand-crafted fine crystal proves perfect for serving hot beverages whatever the occasion. Combine quarter cup ammonia with a mild lemon detergent. Rinse in clean water and air dry on a rack. Clean vases and decanters by filling them half-full with moderately hot water, a small amount of mild detergent, two tablespoons of white vinegar or ammonia and 1/2 cup uncooked rice. Swirl the rice around for a few minutes to remove residue.