When chefs need to cook a delicate sauce or anything that requires double boiling, they trust Winco. This exquisite Winco Master Cook double boiler with matching lid has a 12 quart capacity and is constructed of 5mm of durable 18/8 stainless steel with an aluminum core which retains heat better. NSF tested to withstand high temperature and resist denting and remain beautiful, this double boiler is a must for the home cook or professional chef who needs to cook something too delicate for direct heat