Step 1:
1. in a large non-stick saucepan dry-fan the onion until soft Step 2:
2. Add the remaining ingredients except and bring to the boil. Reduce the heat and simmer gently for 20 minutes until the lentils are soft. Step 3:
3. Allow to cool slightly then blend or purée in small batches in a food processor. Thin the soup down with a little extra vegetable stock or water. Reheat in a saucepan as required. Step 4:
4. Season to taste with black pepper. 