Eighteen chapters are organized into four parts that build logically from theory to practice. The first part covers what linzer dough actually is, why it relies on a ratio of three parts flour, two parts butter and one part sugar, and what happens when you shift that balance. The second part digs into the mechanics — the role gluten plays, why temperature is your most important tool, and why baking soda or baking powder has no place in linzer dough.

The third part is purely hands-on. You'll go through a shopping list with the reasoning behind each ingredient, the full method step by step, a chapter dedicated to rolling pins and rolling technique, baking, filling and sandwiching the cookies, and finally storage and ageing. The fourth part includes a troubleshooting table, a cocoa dough variation and other spin-offs, modern versions that actually make sense, and ten takeaway lines you'll remember even if you read nothing else.

Almost fifty pages in PDF format, easy to read on your phone, tablet or computer, and just as easy to print. It's a digital product, so there's no shipping fee and nothing to wait for except the release date. The seven recipes in the Yumsto app are accessible via a link or QR code straight from the book. The guide covers classic linzer cookies, cocoa and nut variations, the original Austrian recipe, gluten-free and vegan versions, and Christmas baking in general — from choosing your flour and butter all the way to storing the finished cookies.