We've finally come to the end of my ropa vieja. (Get it? What's with me this weekend?) Tonight, I put what was left into two ramekins, topped it with mashed potatoes (a big white potato, 1 tablespoon butter, 2 tablepoons sour cream and a splash of milk) and cooked it for 15 minutes in a 450 degree oven. Its fourth incarnation: We had it with rice, in tacos, as sandwiches and as sheperd's pie.