Begin by microwaving one cup of milk in a microwave-safe container for about one minute, until it's steaming but not boiling.

In a slow cooker, pour in the remaining milk along with the heavy cream. Set your slow cooker to low heat.

In a mixing bowl, whisk together the unsweetened cocoa powder, sugar, and a pinch of salt until well combined.

Carefully pour the cocoa mixture from your bowl into the slow cooker with the milk and cream. Stir gently yet thoroughly.

Cover your slow cooker with a lid and set it to cook on low for about 4 hours or on high for 3 hours.

Once your Witch’s Brew Purple Hot Chocolate is cooked, stir in the purple gel food coloring.