Abstract: A dispenser is adapted to be attached to a conventional jar-type container in which particulate material, such as instant coffee, is commercially sold. The dispenser includes a mounting member which screws on the container in the manner of a conventional lid. The mounting member has an end wall having a pair of openings therein through which coffee will pass when a container is inverted. The mounting member has a guide structure thereon which slidably receives a slide dispenser. The guide structure has one opening therethrough and the slide dispenser has a pair of openings therethrough. The volumetric space of each opening in the slide dispenser constitutes the volume of coffee which is dispensed when the slide dispenser is shifted in either direction.