French Onion Soup

Name: French Onion Soup
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Cuisine: American
Ingredients: 3 large onions (yellow, white, sweet or a combination); 4 Tbsp salted butter; 1/8 tsp baking soda; 1 loaf French bread or baguette; 8 oz Muenster (Swiss or Gruyere cheese, thinly sliced or shredded); 2 cloves garlic (minced); 3 Tbsp flour; ½ tsp granulated sugar; 1 tsp red wine vinegar (or more to taste); 1 tsp dried thyme; ½ tsp dried sage; ½ tsp dried rosemary; ½ tsp dried marjoram; ½ tsp salt; ¼ tsp Pepper; 1 Bay leaf; 7 c. beef broth