Roasted stuffed chicken with celeriac and wild mushrooms
By Gregory Marchand From Saturday Kitchen Ingredients For the chicken 1 free-range chicken olive oil, for frying 125g/4½oz soft unsalted butter 45g/1½oz chestnuts, cooked and chopped 5g/⅛oz chopped truffle (optional) 50g/1¾oz Parmesan, grated 1 medium egg white 125g/4½oz brioche crumbs 25g/1oz shallots and garlic confit 1 lemon, zest …