Preparation In a casserole, heat the oil over low heat until fragrant, then add the onion, bell pepper, and garlic, and cook, stirring, 10 minutes. Add the beef and cook, stirring until brown, 10 to 15 minutes, breaking up any large chunks with a wooden spoon. Drain off any excess fat. Add the sherry, tomatoes, salt, Worcestershire and Tabasco, stir and cook, uncovered, over medium heat for 15 to 20 minutes. Heat the vegetable oil in a small skillet over medium-high heat until fragrant, then fry the chopped potato until golden, 10 minutes. (If you prefer not to fry the potato, boil it over medium high heat unpeeled and halved, in salted water covered until tender, 20 minutes,and omit the vegetable oil.) Add the potato, raisins, and olives to the meat, correct the seasonings, and continue cooking until most of the liquid is absorbed, 10 to 15 minutes. Transfer the picadillo to a large bowl or platter, place the chopped egg in the center, outline the border with peas, and sprinkle the entire dish with the pimiento.