How to Bake Pi: An Edible Exploration of the Mathematics of Mathematics

Eugenia Cheng uses the culinary world as a structural metaphor to explain category theory, a branch of mathematics focused on relationships and underlying patterns. She compares mathematical axioms to basic ingredients and logical frameworks to recipes, demonstrating how abstract structures function across different disciplines. The text details how mathematicians use abstraction to simplify complex problems, moving from basic arithmetic and set theory into the high-level logic of morphisms and isomorphisms. By breaking down the logic of addition or the symmetry of a square through the act of baking a custard, Cheng clarifies how math unifies diverse concepts through generalized rules.

This book serves students and non-specialists who struggle with the traditional, rigid presentation of numbers and formulas. Readers looking for a conceptual understanding rather than mechanical calculation will find a clear roadmap for thinking logically. It provides the tools to recognize structural similarities in everyday life and across various scientific fields. By the end, the reader gains a functional vocabulary for discussing abstract mathematics and a new perspective on how logical systems are constructed from the ground up using simple, consistent principles.