• In a medium saucepan, heat oil over medium-high. Add onion and garlic. Cook until soft, about 5 minutes, stirring occasionally. Add remaining ingredients; stir well and bring to a boil. Turn down heat to a simmer and cook until reduced to ½ cup, about 10 minutes, stirring occasionally. Remove from heat, let cool slightly and puree until smooth.

  • Let cool, transfer to an airtight container and refrigerate until ready to use. Bring to room temp before serving. Tip: Make the sauce a day in advance and then warm gently before spooning onto sandwiches. Recipe courtesy of Weber's Greatest Hits by Jamie Purviance