Budget Cottage Pie That is Super Delicious

This is a great family meal that is good value for money. As well as using beef mince/ground beef it also contains lentils which are a great source of protein, it's a really tasty dish. Big thanks to Gina Homolka at Skinny Taste and Nagi Maehashi for this recipe. Ingredients: 1.5 kg/3lb Beef Mince/Ground Beef 4 Garlic Cloves 2 Onions 2 Carrots 2 Celery Sticks 80g (1/2 cup) Plain Flour 110g (1/2 cup) Tomato Paste 1 Litre (4 Cups) Beef Stock 250ml (1 Cup) Red Wine 2 Beef Bouillon Cubes 4 Tbsp Worcestershire Sauce 2 Tsp Dried Thyme (or 3 sprigs of fresh thyme) 4 Bay Leaves 1.5 Tsp Salt 1 Tsp Black Pepper 200g (1 Cup) Brown Lentils For the Mash: 2.2 kg (5 lbs) Potatoes 600 ml (2.5 cups) of chicken broth 30g sour cream Note: This makes enough cottage pie for 11 servings