- 5 cups milk
- 3/4 cup malted milk powder
- 1/3 cup packed dark brown sugar
- 2 teaspoons vanilla
- 1/4 cup light rum (optional)
- Freshly grated nutmeg
- Bring milk to a simmer in a 4-quart heavy saucepan and transfer 1 cup to a blender. Add malted milk powder and brown sugar to remaining hot milk, whisking until dissolved. Remove from heat and stir in vanilla and rum (if using).
- Blend milk in blender at high speed until foamy, about 1 minute. Divide malted milk among 4 mugs, then top with foamy milk and sprinkle with nutmeg.