Some things are never meant to change, like the ravioli at Lucca in the Mission. Soft, pillowy pockets of pasta stuffed with creamy ricotta cheese are ready to go home with you and bathe in a rich tomato sauce. You'll find all of the above and more at Lucca Ravioli Company, a S.F. staple since 1925, back when the Mission was an Italian and Irish nabe. The family-owned market seems to have hardly changed in the intervening century. Bread, cheese, meatballs, lasagna, pizza dough, cured meats, and imported Italian goods still line the shelves, and while you wait for the apron-clad staff behind the counter to wrap up your order, you can look up to the ceiling mural of Italy and imagine yourself in the Old World.