These toppers are recommended to be used on top of drinks that have a layer of FOAM.
We do NOT recommend that these be placed into drinks that do not have a layer of foam on top. As the edible ink prints are water soluble, this means the edible image will dissolve/run if placed directly into or onto a drink that does not have a layer of foam. They should last approximately 5-10 minutes on top of foam (depending on the type and thickness of the foam) before dissolving away into the drink.