Pi
The recipe for Pi was described in ancient times by Alphimedes of Salatu, who also purportedly invented a heat ray for attacking the Rook. (If the heat ray ever existed, it has long since been lost.) It was later improved upon by Ludolph the Cerulean, named for his bright blue skin. Ludolph gave a Pi to several of the giants. Tii immediately stated that Pi was irrational. Pot, on the other hand, declared this to be the best pie he’d ever eaten - transcendental, in fact.
Worth around 314 currants
Can fit 5 in a stack
+314 energy
when consumed