250 g (9 oz) sliced onions lightly cooked in butter 750 g (1 lb 10 oz) potatoes, sliced or cut in quarters 15 g (½ oz) salt.

5 g (⅙ oz) pepper

These ingredients are mixed together and placed around the joint after it has been coloured and are then cooked together. For poultry, the garnish is modified as follows: olive-shape potatoes and small onions fried brown in butter in advance.