A container that controls combining a soluble material with a solution includes a body that holds the soluble material and a film that covers the body and having pores therein, where flow through the pores is impeded after a pre-determined amount of time following the soluble material in the container being combined with the solution outside the container. The soluble material may be tea. The solution may be water. The body may have a frame that supports the film. The pores may contract to impede flow therethrough. The pores may contract in response to temperature of the solution, in response to a pH level of a combination of the solution and the soluble material, and/or in response to being exposed to water. The container may include beads disposed proximal to the pores, where the beads expand to impede flow through the pores.
