From America's Test Kitchen Season 7: Rainy Day Barbecue
Makes about 1 1/2 cups
Classic barbecue sauce must simmer for a long time for the whole tomatoes in it to break down. However, we found that starting with ketchup can shorten the process. Use this sauce as you would any other barbecue sauce—either brushed on foods during the last minutes of grilling or served at the table as a dipping sauce with ribs or brisket.