Place oil in saucepan and heat.
Add onions, leeks, sweet potato, carrots, parsnips, garlic and cook for 5 minutes.
Add water and ProZero and bring to the boil. Simmer for 10 minutes.
Once cooked, mash with a fork until almost smooth.
This recipe is Freezable!
ProZero is a food for special medical purposes and must be used under medical supervision. This recipe has been specifically designed for a low protein diet. Refer to labels for allergen and other product information.