In a large sauté pan, heat oil over medium high heat until hot but not smoking. Add pimientos or red peppers, green peppers and garlic and sauté for 2 minutes. Add black beans, vinegar and Tabasco. Bring the mixture to a boil, then reduce heat to low, cover and simmer for 5 minutes. Stir in rice and cilantro. Taste and adjust seasonings. Serve accompanied by additional Tabasco.