Beef Liver and Onions

For the Onions:

2 large onions, thinly sliced
2 tablespoons of butter
1 tablespoon of olive oil
½ teaspoon of salt

½ teaspoon of sugar (optional, for caramelization)
For the Gravy:

2 cups of beef broth
2 tablespoons of all-purpose flour
1 teaspoon of Worcestershire sauce
Salt and black pepper to taste

Instructions in next page