250g/9oz flat black or shiitake mushrooms, roughly chopped
150g/5oz shallots, finely diced
salt and pepper
dash olive oil
15g/陆oz unsalted butter
55g/2oz unsalted butter
3 tbsp double cream
1 small free-range egg, beaten
1 pack (roughly 375g) ready rolled, all-butter puff pastry
175g/6oz chicken liver 辫芒迟茅
1 fillet of beef, roughly 1.35kg/3lb
4 thin shop-bought pancakes