Brown the sausages in oven or grill. can be added to the stew raw if you prefer. Chop all your veg to desired length/thickness( i keep the mushrooms whole)
Add your stock to a big soup pan and then add all your vegetables. bring to the boil then simmer for 15 minutes.
add the lentils, sausage, herbs and spices and simmer on a low heat for around 30 mins.
garlic and fennel sausages go well. if you want a thicker stock mix a little corn flour with cold water until you have a paste. add the paste to the stew about 15 mins into the cooking time. Try adding some shredded savoy cabbage