Clean the shrimps and toss the heads and shells in the warm vegetable stock, together with a couple of mint sprigs to give it more flavour.
Chop the shrimps and put in a bowl with the lime juice, olive oil, salt, ground pepper and the finely chopped mint. Cover and set aside in the fridge to marinate for at least 10 minutes.
In a large pan, drizzle the olive oil, add the finely chopped shallot and let it sweat. Add the rice and toast for a couple of minutes, then pour the white wine and let it evaporate.
Add the warm stock to the rice, a couple of ladles at a time, letting it absorb it before adding more.
When the rice is almost cooked, add the shrimps and cook for another minute.
Turn off the heat and add a tablespoon of butter to stir in the risotto until creamy.
Notes
Stir risotto constantly and add warm broth little by little for that creamy texture.
Don’t add lime juice too early—it can dull the flavor when cooked. Add it right at the end for brightness.
For an extra flavor punch, sauté the shrimp shells separately and simmer them in the broth to make a quick homemade stock.