Step 1: 1. Add to boiling water a selection of veg to cook.
Step 2: 2. Remove the vegetables once boiled and put aside to cool.
Step 3: 3. Add the mixture of chopped onions, carrots and celery to a boiling pan with hot oil.
Step 4: 4. Add a small amount of salt, pepper and then the rosemary.
Step 5: 5. While the mixture is cooking, cut the boiled selection of veg into small amounts.
Step 6: 6. Add the selection of veg and stock to the cooked vegetables and bring to the boil.
Step 7: 7. Once the mixture is boiling, reduce the heat and leave to simmer for 30 minutes.
Step 8: 8. Remove the mixture when cooked from the heat.
Step 9: 9. Blend the mixture to a smooth consistency.
Step 10: 10.Serve straight away if your cooking dinner, otherwise let the mixture cool down before transferring into plastic container and leaving in the freezer until serving time.