Plot: It's a long weekend of comfort cooking in Nigella's Kitchen where the food is delicious and the cooking is easy. The action starts on Friday night with a fast and fabulous supper of sauteed Scallops with Thai Scented Pea Puree, then it's Saturday lunch for the kids, and Nigella's conjuring up an Italian classic, Pasta Alla Genovese, a double carb dish of spaghetti cooked with potatoes and a fabulous home made basil pesto