In a small bowl, mix cocoa powder with 1–2 tablespoons hot water until it forms a smooth paste. This reduces clumps and amps up flavor.
Add maple syrup or honey to the cocoa paste and stir. It'll look glossy and smell like a chocolate shop. If skipping the paste, add cocoa and sweetener to a large jar with a tight lid.
Pour in 2 cups of cold milk. Add vanilla and a pinch of salt. Salt is your secret weapon here.
Seal the jar and shake vigorously for 20–30 seconds. No jar? Whisk in a bowl, or blitz with a handheld frother.
Need more sweetness? Add 1 teaspoon at a time. Want stronger chocolate? Add 1 teaspoon cocoa and shake again.
Toss in an ice cube and shake for instant chill and froth, or refrigerate 10–15 minutes for max flavor fusion.
Dust the top with a pinch of cocoa or cinnamon, or add a splash of coffee for mocha vibes.