Abstract: The invention pertains to a delivery system for delivery of at least one physiologically active ingredient in a pleasant and palatable manner. One preferred embodiment is a beverage mix comprising a plurality of morsels, each morsel comprising a core, a plurality of effervescent zones, at least one barrier zones, wherein the at least one barrier zone temporarily protects the plurality of effervescent zones. When a beverage is immersed in water, the barrier zone prevents water reaching the effervescent zone. The at least one barrier zone deteriorates exposing the effervescent zones in sequence. The effervescent zones dissolve and carbon dioxide gas is released. Gas bubbles coat the morsel and it rises. When the gas bubbles disengage from the morsel, the morsel falls. The process repeats until all of the effervescent zones are exposed. The drink comprising gelatinous cores in carbonated water is ready for consumption.