Cost information for the following is not included. Normally this is because the quantity or ingredient is unknown
50g / 2oz unsalted butter
1 liter/ 2 pints vegetable stock
1 tbsp wholegrain mustard.
50ml / 4 tbsp crème fraiche
Sea salt and black pepper
TO SERVE
Bread croutons (see note below)
200g/8 oz mature cheddar cheese, coarsely grated