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["Cut shrimp and scallops in three pieces.", "In a food processor, blend shrimp, scallops, 2 sliced calamari tubes and garlic into a coarse paste. Transfer to a bowl.", "Then add cheese, parsley, red pepper flakes and season with salt and pepper. Mix to combine.", "Kitchen tip: make a small patty and cook it in the pan for few minutes on both sides, taste and adjust the seasoning if needed.", "Using a small spoon, start stuffing the calamari tubes until almost full and shapely, leaving just 1/2 inch opening, pierce and secure with the toothpick.", "Using a sharp knife, cut an ""X"" on the bottom of each tomato, it will help to loosen the skin.", "Place them in rapidly boiling water for 1 minute, then plunge the tomatoes into an ice bath with the slotted spoon. Let them cool slightly, peel the skin off.", "Chop the tomatoes finely", "Heat the oil in a large wide-sided skillet, add onions and saute for 5 minutes until translucent.", "Add garlic and cook for 1 more minute.", "Then add tomatoes and sugar, season with salt and pepper and cook for 10 minutes on medium heat.", "In a single layer, place stuffed calamari on top of the sauce, cover with the lid and cook for 20 minutes on medium-low heat.", "Meanwhile, bring the water to a boil, add polenta, bring back to a boil.", "Reduce the heat to low and cook for 8 minutes, stirring constantly. Season with salt and pepper.", "Serve calamari either sliced on the bias or intact on a bed of polenta with the tomato sauce.", "Sprinkle with finely chopped parsley and extra serving of Parmigiano-Reggiano cheese on top."]