Step 1: Bring 2.5 litres of water to the boil in a large pot
Step 2: chop up all the veg except 2 carrots into small cubes
Step 3: grate the remaining 2 carrots
Step 4: add veg and stock cubes to water
Step 5: cut bacon into small chunks and add to pot
Step 6: rinse lentils in cold water and add to pot
Step 7: simmer slowly for 1hr, removing the scum as you go.
Step 8: add salt/pepper to taste.
Step 10: for best results leave soup for at least 4hrs before serving for flavour to intensify.