The bag shall be left in the water-bath, maintained at 42 plus or minus 2 °C throughout, with continuous movement of the bag or continuous agitation of the water, until the thermal centre of the carcase (the deepest part of the breast muscle close to the breast bone, in chickens without giblets, or the middle of the giblets in chickens with giblets) reaches at least 4 °C, measured in two randomly chosen carcases.
