With a blender we prepare pasta, putting the egg, the flour, white of the eggand oil and beat the all at least 30 seconds. If it forms a kind of sticky ball, we have to add some flour spoon. Otherwise if it results hard, we have to bathe with water. To put the ball on the floured table and to work it at least 10 minutes. If we have to make pasta to hand, to mix in a bowl the flours makind a fountain. To add the egg with its white, to mix adding oil and the flour with a fork. We continue to knead on a floured table. If pasta was stuck to the table, we can add some flour. In the contrary case, to bathe with water. We knead at least 12 minutes, so that the dough results soft. If we possess the electric machime, to mix and to throw the puff pastry,otherwise we wind pasta in the transparent film and we leave it to rest, at least 15 minutes, before throwing it. When the puff pastry is ready the fettuccine can be cut. To heat the oil to middle fire in a casserole to make the sauce. We add the shallots and we fry slightly them until they doesn't become clearer. We bathewith some wine, adds green pepper and mustard, we continue to mix for letting evaporate wine. We add milk and we bring all to boil; then we reduce the fire. In the just prepared sauce the tagliatelle are go cooked, to slow fire(2 minutes around). We unite some minced tomato and we season with addition of salt. The dish is ready.