Most disappointing hot chocolate is not a bad recipe, it is bad technique. Powder tipped into hot milk clumps, because the fat in the milk coats the cocoa particles before the water can dissolve them. You end up with sweet milk and a sludge at the bottom.
The method
- Put the powder in the cup first. Two heaped teaspoons for a 240ml (8oz) cup, three for 360ml (12oz), four for 480ml (16oz).
- Add a splash of hot water, maybe 30ml, and stir it to a smooth paste. This is the step that matters. No lumps should remain.
- Top with hot frothed milk, pouring slowly at first so the paste lifts into the milk rather than sitting under it.
- Finish with a dusting of the same powder over the foam.
Getting the milk right
Milk for hot chocolate wants to be hotter than milk for coffee, but not boiled. Around 65 to 70C is right: hot enough to hold temperature while it is drunk, not so hot that it scalds and turns thin and sweet. If you are steaming it on an espresso machine, texture it as you would for a latte, then hold the jug a moment so the foam settles into something pourable.
The vegan version
Plant milks work well here because chocolate carries the flavour that oat or almond milk brings with it. A vegan drinking chocolate made without dairy solids dissolves the same way, and doubles as the dusting powder over a cappuccino, so a cafe can carry one tin instead of two.
For a machine or a busy counter
If the chocolate is being dispensed through a vending or automatic machine, the powder has to be formulated to flow. A chocolate that clumps or bridges will jam a hopper, so use a vending specific powder and start around 21g per 180mL cup, adjusting to the strength your site wants.
Mocha, while you are here
A mocha is this drink with a shot of espresso added before the milk. The chocolate needs to be dosed a little lighter or it buries the coffee. There is a full method in how to make a mocha.
Common mistakes
- Boiling the milk. It flattens the sweetness and gives that skin on top.
- Under dosing. Hot chocolate needs more powder than people expect. Two teaspoons is a minimum, not a maximum.
- Stirring only at the end. By then the lumps have set.
