Pour cereal into bowl. Pour milk on cereal. Preparing a bowl of your breakfast favourite is simple, right? Apparently not.

The founders of the divisive Cereal Killer cafe in east London are to launch a cookbook, which as well as containing 40 recipes for what to do with your wheats, corns and brans, will also reveal to its readers “the important rules of cereal-eating”.

Identical twins Gary and Alan Keery sparked a gentrification debate last year when they opened their first branch in the hipster heartland of Shoreditch, east London, which sells 120 types of cereal for up to £4.40 a bowl.

Some questioned the fairness of the Keerys’ pricing – they also offer “premium milks” for an extra 40p and toast for £1.50 – while others, including the London mayor Boris Johnson, rushed to defend their entrepreneurial spirit.

In October, just in time for the Christmas rush, the brothers from Belfast are releasing a book through Ebury Publishing, which along with recipes such as Coco Pops brownies and sausage-stuffed shredded wheat, is said to feature “nostalgia, party facts, games and humour”. Other recipes in the volume include cornflake chicken and no-bake crunchy-nut cluster cake.

A statement on Ebury’s website said: “Resplendent with 1980s and early 90s pop culture references, photos and comic-strip illustrations, The Cereal Killer cafe will remind you of happy days when cereal boxes came with toys inside and free games came on the back of the box.”

This year a pop-up Porridge cafe opened in Shoreditch, while the Keerys plan to open a second branch of the Cereal Killer cafe in the summer.