Maths is more fun when it includes baking, we can guarantee it. In Eugenia Cheng's new book, Cakes, Custard and Category Theory, she takes the reader on a culinary journey through advanced maths from simple numeracy to category theory, baking brownies, bagels and Battenburg and much more along the way. Read an interview with Eugenia in You magazine and watch her cut a Möbius strip out of a bagel below: Love maths and/or baking? Up for merging the two? Let us know on Twitter @profilebooks #mathsbakeoff and Facebook/ProfileBooks.