Step 1

Remove the meat from the tail of the lobsters and cut into bite-sized pieces, reserving the shells.

Step 2

Heat the olive oil in a saucepan over medium-low heat. Add the lobster shells and cook for 1-2 minutes. Add the stock and bring to the boil. Reduce heat to low and simmer for 5 minutes. Strain the stock and return to a low simmer.

Step 3

Heat the butter in a frypan over low heat. Add onion and cook for 1-2 minutes until soft. Add tomatoes and stir for 1-2 minutes until they start to soften. Add rice and stir to coat the grains. Add wine and cook for 2-3 minutes until absorbed. Add stock a ladleful at a time, allowing each to be absorbed before adding the next. Continue: stirring constantly, for about 20 minutes until all the liquid is absorbed and the rice is cooked but firm to the bite.

Step 4

Gently stir through the lobster, basil, lemon juice and grated parmesan, then season with sea salt and black pepper. Divide among serving dishes and top with extra parmesan shavings.