Lentil soup

I cook gammon joints in my trusty pressure cooker. The cooking liquid I then turn into lentil and gammon soup:

500g red lentils - rinse in seive until the water runs clear
2 onions chopped
5 carrots chopped
3 pints of cooking liquid topped up with water or stock and water

Bring slowly to the boil then simmer for 20-25 minutes until the carrots are cooked.
Liquidise when cool enough to do so.

If sufficient gammon left over from joint (and I try and make sure there is), shred and add to the soup.