DuPuy Lentil Soup

A simple wintery soup. I've indicated "beef broth concentrate" in the recipe, but any very rich beef broth will do. Just make sure the flavours are big and bold or they'll get lost in the warm richness of the other flavours.

180g of bacon cut in small cubes (retain 4 Tbsps. of the rendered bacon fat)
5 onions, chopped (approx 800gr)
3 Bay laurel leaves
1 Tbsp. ground cumin
6 garlic cloves, minced
1½ cup DuPuy lentils
8 cups water
1½ Tbsp beef broth concentrate
¾ tsp salt

1 Tbsp red wine vinegar
Ground black pepper, to taste
Hot sauce, to taste

1. In a large casserole slowly render the bacon until it is brown and crispy. Cook the onion in the hot fat, along with the Bay leaves and cumin until the onion is tender. (Cooking the onions over low heat for a long time allows for the sweetness of the onion to come through). 
2. Add the garlic and cook another 2 to 3 minutes.
3. Toast the lentils in the hot bacon fat and onion mix for 2 to 3 minute.
4. Add a bit of the water to start and scrape up as much of the fond that developed from browning the onions as you can, then add the rest of the water and beef broth concentrate and bring to a boil. Let simmer, stirring occasionally, for about 50 to 60 minutes, or until the lentils are completely soft.
5. Optional: Once the lentils are cooked, you can blend about a quarter of the soup. This will make it thicker.
6. Stir back in the rendered bacon, along with the salt, pepper and vinegar.
7. Adjust the seasoning to taste.
8. Serve with ground black pepper on top and, if desired, a few drops of hot sauce.