Abstract: A desired serving temperature of a beverage contained in a flexible beverage bag for soft-sided container (20) is maintained for a prolonged period without undesirable leakage in a structure that includes an insulating container having a bottom wall (10), an upstanding, insulated side wall (12) defining a beverage bag receiving space (18) and having an upper opening (14) together with a closure (16) arranged for movement between positions opening and closing the upper opening (14). A rigid straw (42) is mounted on the container and has opposed ends (44,46) with one of the ends (44) having a sharp, lance-like tip located within the beverage bag receiving space (18) and the other end (46) extending away from the insulating container. A straw-like mouthpiece (50) is disposed on the other end (46) and a seal (68) is disposed about the end (44) that seals against the rigid straw (42) as well as the beverage bag (20) when the end (44) is pierced and enters the beverage bag (20).