A portable beverage vessel allows for dynamic mixing of two isolated liquids. An outer container holds a first liquid while an inner container holding a second liquid fits inside the outer container. A lid seals the outer container and suspends the inner container. A force distribution member rests between the lid and inner container. Applying force to the lid transfers through the force distribution member to release the inner container into the outer container, mixing the liquids. The transparent outer container provides a visual of the falling inner container. The lid and inner container engage in a snap-fit suspension. A removable lid cover allows drinking access. The vessel is sized for portability and handheld drinking. The force distribution member enables controlled release of the inner container. The liquids remain isolated until mixing is desired. The vessel efficiently and intuitively mixes two liquids for enjoyment from one container.