Prepare the Pork: Clean the pork, removing the membrane and nerves, then cut into large pieces.
Prepare the Bacon: Cut the smoked salted bacon into pieces.
Prepare the Vegetables: Cut the red onions and rainbow carrots.
Cook the Bacon: Melt the bacon in a pan until it starts to sing, indicating it's cooking.
Brown the Pork: Add the pork to the pan and brown it.
Cook the Vegetables: In the same pan, cook the onions, carrots, and garlic until they start to caramelize.
Deglaze and Combine: Deglaze the pan with chicken broth, then add crushed tomatoes, ground cumin, and lentils.
Cooking: Bring to a boil and cook for 1 hour and 15 minutes, removing the pork fillet after 30 minutes.
Final Steps: After 40 minutes, check the lentils and pork for doneness. Serve hot.