1AU JUS: To get started, heat olive oil in skillet and caramelize the onions. Add garlic and cook for another minute. Add white wine to deglaze the pan (that's the best part!) Add worcestershire and cook for another minute; stir constantly. Add beef broth and bring to just a boil; reduce heat and simmer for about 30 minutes more.
2Strain broth mixture to remove solid, then return it to the pot. Add flour and simmer an additional 5 minutes; stirring occasionally. Set aside.