That means the Potato King.

Turns out this guy was more of a spec-tater.
Generations of Germans believe Frederick the Great brought the beloved potato to Germany.
The legend is this: King Frederick II of Prussia wanted his subjects to eat potatoes, introduced to Europe in the 16th century from South America. But the people of Prussia, which later became part of a united Germany, wouldn’t touch the tuber.
So the 18th-century monarch resorted to trickery. He placed royal guards and soldiers along the edge of his palace garden — thus creating the illusion that potatoes were a rare and valuable crop reserved for the royal family and its aristocratic friends. But the guards withdrew from their posts each night, creating an opportunity for enterprising locals to sneak in and “steal” the spuds…
The unexciting truth is that the potato has been cultivated in Germany’s Bavarian region since 1647, Luh said. Frederick’s great-grandfather, Elector Frederick William, introduced it to the Brandenburg area of Prussia in the 1650s, but only because he liked the aesthetics of the plant’s leafy greens.
