A drink container includes an outer body with an inner separation membrane separating two chambers, the separation membrane having a through-passage connecting the two chambers, straw holes through the top of outer body into each of the two chambers, enabling a user to introduce a straw into one or both of the chambers to consume liquid content of the chambers, a flexible closure membrane sealed to the separation membrane by a separable adhesive, over the through-passage, and a pull strip overlying the closure membrane, attached to a lowermost end of the closure membrane, and passing through a slit on top of the outer body, ending in a pull tab outside the top of the outer body. Grasping the pull tab and pulling the pull strip upward through the slit peels the closure membrane away from the separation membrane, opening the through passage, enabling contents in the two chambers to mix.
