Celeriac soup

|We had a couple of returned celeriac that needed using up so this weeks soup is smooth and creamy.|celariac onions potatoes|1kg celeriac peeled and chopped1 medium onion chopped2 medium potatoed peeled and diced1 tbs oil1 ltr vegetable stockOatmilksalt & pepper|Heat the oil in a large saucepanAdd the onion and sweat for 5 minsAdd the celeriac and potatoes and sweat for a further 15 mins on a low heat with the lid on. Stir from time to time to stop it catching.Add the hot stock and seasoning bring to the boil reduce heat and simmer for about 20 mins till veg is tender.Puree adding oatmilk to thin to desired consistency. Check seasoning and serve.|10.00 minutes|6|