A heat-sensitive adhesive material including a substrate and a heat-sensitive adhesive layer provided thereon. Preferably, the internal chamber has a flow disrupter taking the form of a funnel-shaped end portion adjacent to the condiment discharge port. The first lens element e1 is a positive lens, and a combined refracting power of the second lens element e2 and the third lens element e3 is negative. This contact is maintained for a period of up to about 15 minutes.