In a medium saucepan, bring 2 cm (1in) water to the boil.

Place chocolate chunks in a bowl large enough to fit over the saucepan without the bottom of the bowl touching the water.

Remove saucepan from the heat and place bowl over the top. Stand for 5 minutes.

Meanwhile, divide ricotta between two little cups or glasses.

Stir chocolate, which should be melted and smooth, and spoon over the ricotta.