6 medium potatoes
2 medium onions
1 tbsp butter
6 cups stock or milk and water mixed
salt & pepper
Parsley

 

Peel and dice the potatoes and chop the onions.  Melt the butter and gently cook the potatoes and onion in a covered pan until soft but not coloured.  Add the liquid, season to taste and serve in bowls decorating the top with a little parsley.