Salsa with roast

1 small onion , peeled and minced 1 garlic clove , peeled and minced 1/2 cup olive oil 1 1/2 teaspoons dry mustard (Coleman's preferred) 1 1/2 teaspoons salt[...]

3 canned tomatoes , from a 14 . 5-oz can of redpack whole peeled tomatoes with juice (drained) 4 garlic cloves , roasted 1/2 medium onion , roasted 1 teaspoon[...]