Slice the leeks and sauté them in a pan over a low heat for around 15 minutes with a ladleful of water, some oil, a pinch of salt and some freshly ground pepper.
In a saucepan toast the rice with a tablespoon of oil for around 2-3 minutes over a high heat, until it is translucent.
Reduce the heat, add the sautéed leeks and cook them adding a ladleful of warm stock one at a time and keep on stirring.
Halfway through cooking, add saff ron which must be melted down in a little warm stock.
When the time is up, whisk it with 1 cm (2/5 inches) Gorgonzola dices and a knob of butter until it gets creamy.
Leave it to stand for some minutes and fi nally serve it.