How should you clean the steam wand if it a build up of milk on it?

To clean a steam wand with milk buildup, first, purge the wand by steaming a small amount of water to remove any residual milk. Then, use a damp cloth or sponge to wipe the exterior thoroughly. For stubborn buildup, soak the wand in a mixture of warm water and a mild detergent or a specialized milk cleaner for a few minutes, followed by rinsing with clean water. Always ensure the wand is dry before using it again.