heat the tablespoon of oil in a pan, saute the 2 cloves of garlic for 1 minute or until fragrant. add tomato pasta and cook for 1 minute. add water, fish sauce, sugar, and soy sauce. bring to a boil and boil 2 minutes. In a bowl, combine pork, 4 cloves garlic, shallots, scallions, sugar, fish sauce and pepper. mix well. cut off and discard tomato tops. scoop out the pulp. allow to drain on paper towels for 10 minutes. stuff tomatoes with pork mixture. heat oil in wide skillet. add tomatoes, meat side down, cover and simmer for 5 minutes. turn tomatoes, meat side up, cover, simmer for 5 minutes. transfer to platter with slotted spoon and pour sauce over them.