Clue on the front...
Add cryptic flare to any beverage with a Cryptic Wares™ mug. Whether you want to honor a clue you wrote, confound your guests, or look smart in online meetings, sipping a drink from a cryptic mug is sure to delight.
.. solution at the bottom
Finish your drink to reveal the answer. Or dump the last bit in the plant pot next to you, no one will know!