Caramelized Onion without mustard bread

1 1/2 teaspoons canola oil 6 cups sliced red onions 3/4 cup sliced green onion 1/8 teaspoon kosher salt 2 tablespoons chinese black vinegar 2 tablespoons low[...]

caramelized onion (recipe below) 1 1/2 lbs ground beef 1 small onion , finely chopped 1/4 cup sweet pickle relish 1 teaspoon salt 1/4 teaspoon pepper 2[...]