Biscuit of Totality

The Biscuit of Totality (referred to as the Mana Cookie prior to version R1.7 226) is a food item added by Botania. When eaten by the player, it gives them Saturation for 20 ticks, effectively restoring all hunger points.

Trivia
The Biscuit of Totality is an homage to YouTuber TotalBiscuit.