Rich and red barbecue sauce

RICH AND RED BARBECUE SAUCE
MAKES 3 CUPS

1 T. vegetable oil
1 c. chopped onion
3 cloves garlic, minced
1 t. kosher salt
1 can (14 oz.) crushed tomatoes
1 c. cider vinegar
¾ c. brown sugar
2 T. Worcestershire sauce
1 T. dry mustard1 t. pepper

Simmer for 30 minutes.