Celeriac and beetroot soup

I really like celeriac, but I'm never quite sure what to do with it, apart from mixing it with potato in a celeriac mash. Soup is one option, and as part of my campaign for more (naturally) pink foods, I chucked some beetroot in too. The result was really good - a nice balance of slightly bitter celeriac, sweet beetroot and acidic lemon juice. And it even matched Carmela's clothes.



Ingredients
1 head of celeriac
1 large onion
2 large potatoes
olive oil
beetroot (pre-cooked)
1 glass of dry white wine
1 litre of vegetable stock
juice of 1 lemon
salt
pepper

Method

1. Peel the celeriac, onion and potatoes. Chop the onion roughly and chop the celeriac, potato and beetroot into chunks.
2. Put the onion in a large pan with some olive oil and fry gently until softened. Add the celeriac, potato, beetroot, white wine and stock, bring to a boil, cover, turn heat to minimum and simmer until the potato and celeriac are cooked.
3. Allow to cool a bit, then puree with a stick blender or food processor. Add the lemon juice, check for seasoning and add salt and pepper.