First, cook 1 ¼ cups dried lentils according to the package instructions. For a quicker and easier option, use pre-cooked lentils.
Peel 2 cloves garlic, 1 large onion, and 1 medium carrot. Slice the garlic into thin pieces and roughly chop the onions. Cut the carrots lengthwise, then slice them into half-circles. Dice the smoked sausage into ½-inch pieces. Cut 5 ounces smoked sausage into circles.
In a pot with a thick bottom, melt the lard over medium heat until it shimmers. Add the prepared ingredients in the following order for frying:
Add the carrots and fry while stirring for about 5 minutes. Then, add the smoked sausage and fry for another 3-5 minutes. Next, add the onions and sauté for 1 minute until they become translucent. Finally, add the sliced garlic and fry for 1 minute, but no longer, to avoid browning and bitterness.
Add ⅔ of the cooked lentils to the pot. Set aside one cup of 6 cups beef broth and pour the rest into the pot. Season with ¼ teaspoon ground black pepper. Bring the mixture to a boil, then reduce the heat to low and let it simmer for 5-10 minutes.
In the meantime, blend the remaining ⅓ of the lentils with 1 cup of broth using an immersion mixer. Add the mixture to the pot.
Add 1 teaspoon dried marjoram (always at the end of cooking), stir well, and salt to taste. Serve and enjoy.