Prepare the prawns: remove the shell and intestines from the prawns, wash them well under cold water, dry them, spread them out on a baking tray covered with parchment paper, season them with oil, salt, pepper and grated rind of a lemon and cook them in the Freddy preheated to 85°C with the low temperature cooking function for 15 minutes. Once cooked, set aside 8 and coarsely chop the others with a knife.
Prepare the berry cream: finely chop the shallot and sauté it in a pan with a drizzle of oil, add the raspberries, blackberries and blueberries and cook until they form a sauce. Towards the end of cooking, add a little balsamic vinegar glaze and brown sugar. Blend the berry sauce until smooth.
Heat well a large pan and toast the rice in it for a few minutes. Add a little hot vegetable broth, mix well, and continue cooking the risotto, adding broth a little at a time and stirring constantly.
Towards the end of cooking, add the cream of berries and coarsely chopped prawns and salt if necessary. Mix in the risotto with a drizzle of extra virgin olive oil and Parmesan cheese and serve with the shrimp tails kept aside and with a few drops of stracciatella.