Color Changing Heat Reveals Hidden Vintage Old World Map Pattern

a black 11 oz ceramic mug that hides a vintage old world map. pour in something hot and the black finish fades to white to reveal the map. a small, drinkable surprise.

looks like a plain black coffee mug at first. pour in a hot drink and a vintage old world map slowly appears across the cup as the finish changes from black to white. it’s an 11 oz ceramic mug, so it feels like a real mug and not a gag you can’t use. silly and small, it turns a boring morning coffee into a tiny reveal. great for map nerds, people who like odd little gifts, or anyone who enjoys a slow little wow with their caffeine.