Coffee, milk and sugar already in the sachet. Hot water is the only thing you add and it foams as you stir, so you get a proper head on it rather than a flat brown mug of something.

It’s the product people order once to test us and then order by the case. No fridge, no frother, no milk to remember. Five sachets to a pack, thirty seconds a cup, and it tastes the same on a building site as it does in a boardroom.