Put the green tea in the teapot, pour over a little boiling water, swirl for a few seconds, then pour the water off to rinse away the tea's bitterness.

Add the bunch of mint, the sugar and the boiling water, then set the teapot over low heat and let it come to a gentle simmer.

Pour out a glass and tip it back into the teapot two or three times to mix the tea and sugar.

Taste the tea and adjust the sugar to your liking.

Let it steep for a minute or two over low heat.

Pour the atay into the glasses from high up to create the crown of foam, and serve it piping hot.