Rapid one touch preparation of hot or cold milk froth 1 button for all preparations, 1 second button pressure for Hot milk or hot milk froth, 2 second button pressure for cold milk froth Maximum hot & cold milk froth capacity: 4. 1 oz. Maximum hot milk capacity: 8. 1 oz. The jug is water proof (but not dishwasher safe) and you can do it directly under running water, simply use non-abrasive cloth Auto shut off when finished. Non-stick surface If quality of milk froth not up to standard recommend usage of refrigerated whole or low-fat milk about 4 TO6 Degree Celsius and also make sure to use the appropriate whisk. Verify that the jug is clean. This frother quickly heats up milk to between 160 and 170 degrees Fahrenheit. Milk that has been frozen will not froth