A method of texturing a textile yarn, and apparatus for performing the method, are disclosed in which the yarn (13) is passes successively through a heating zone (15), an elongate cooling zone (16) and a false twist device (17), and is further cooled before entering the elongate cooling zone (16) by means (25) providing a flow of cooling fluid. The flow may be regulated so as to be intermittent, or in response to a yarn temperature measuring device (39) located just before the false twist device (17) and/or such that the cooling fluid, if a liquid with a boiling temperature less than that of the heated yarn (13), has evaporated before the yarn (13) enters the false twist device (17). The invention provides a shorter cooling zone (16), which with the elongate heating zone (15) preferably provide a straight yarn path, than was the case beforehand, and also provides a method of controlling the properties of the textured yarn (13) by regulation of the quantity of cooling fluid applied to the yarn (13).