The milk must be approx. 1-2 cm high in the pot, so that the sieve simply goes in to foam. It's easy to foam the milk for just 1 capuccino. Totally uncomplicated, so far it has always worked.

Small quantities of milk (from approx. 1 dl ev less) can be foamed. The temperature must be right

There is no calibration mark in the pot itself... but since the pot can hold a total of 1L, a good 100ml minimum quantity of milk is required so that the foam sieves can also grip.... LG

I "operate" the milk frother with oat milk, or oat barista. No matter how much or little I foam, it always works!