The manual milk frother creates a foamy texture in under 30 seconds, allowing you to enjoy a café-style coffee at home. The glass carafe, made of durable heat-resistant borosilicate glass, can be used to warm the milk in the microwave after frothing. To thicken the milk, simply move the plunger frother up and down approximately 60-90 times. The milk frother has a durable design, with a silk plastic lid that has a deep rim to prevent foam from spilling out, and a comfortable-to-grip plunger handle. It can hold up to 8 ounces of cold milk and is dishwasher safe.