1/2 litre milk
1/2 litre vegetable stock
about 400g of grated root veggies (I used 1 carrot, 1 potato, 1 onion and a piece of turnip)
Add butter, flour and milk to a pan and whisk.
Heat until thickened to look like a white sauce.
Add vegetable stock slowly and stir.
Add grated veggies.
Simmer for 10 mins and stir regularly to stop it catching on the bottom of the pan.
It doesn't really re heat well so best made in small batches and eaten fresh.