This straight sided steaming pitcher is made from 18/10 high quality stainless steel. Ideally milk for espresso should be steamed as needed on a per drink basis. This espresso milk steaming pitcher would be a recommended size for the home or office, or kept on hand to make smaller drinks in the coffee shop. This is the preferred pitcher to use for making Latte Art. Steaming and Frothing Pitcher Tip: For best steaming performance keep unused or waiting to be used steaming and frothing pitchers in the refrigerator and chilled until you are ready to steam.