b'WHAT YOU NEED TO DO:Drain and chop the canned tomatoes, saving the drained juice to use later in the making of the sauce. Heat the olive oil and garlic in a large saut pan on medium-high heat until the garlic starts to brown, about 2 to 3 minutes. Add the pancettaor bacon, the onions and red pepper flakes. Cook until the pancetta/bacon begins to brown and the onions soften, about 2 to 3 minutes.'