Whelk and Smoked Haddock Fricassée with Celeriac Chips, a recipe from the Worldwide Gourmet

Ingredients

• - 50 g (2 oz.) chopped onion
• - 20 g (4 tsp.) butter
• - 40 Whelks, shelled
• - 3 cloves of garlic, chopped
• - 700 ml (2 3/4 cup) pale beer (e.g., lager)
• - 200 ml (3/4 cup) chicken stock
• - 150 g (5 oz.) smoked Haddock
• - 100 g (6 tbsp.) butter
• - Salt and pepper
• - 50 g (3 tbsp.) sugar
• - Sprigs of chervil