Put oil and butter in a large saucepan. Thin slice the onion and make it light fry. Add rice and make it toast, add a lambrusco glass and make it vanish. Add a buillon ladle at a time.
Put a little of sliced onion in a pan and make it light fry whit sausages. Empty the pan in the saucepan when the rice is coocked. After add grated grana cheese and make it melt in risotto.