The invention relates to a barbecue accessory comprising a chicken roaster for preparing poultry, in particular chicken, arranged vertically on a barbecue. The barbecue accessory comprises a chicken roaster formed from a poultry holder and a base plate, and a roasting hood extending over the chicken roaster and surrounding, at least partially the roaster. A gap, through which the hot gases coming from the barbecue penetrate into the roasting hood, is provided between the hood and the base plate of the chicken roaster when in the ready-to-use state.