Corpus

A culinary school wanted to teach students to cook every dish in the city. The principal first borrowed a pile of recipes from restaurants and filled three storerooms. Seeing so many books, students assumed the foundation must be deep. The paper piled higher and higher, and for a while the principal felt reassured. Only when students began making dishes suited only to wealthy households did he realize that "more" had masked a skewed source.

But the first banquet went badly: two copies had salt and sugar reversed, one batch of recipes covered only wealthy households' banquets and no poor-alley snacks; and several volumes had unknown origins, with owners showing up to claim compensation. The dishes the students made were sometimes duplicates, sometimes obscure, and some could not be taught publicly at all. Some recipes also carried the heat settings of old stoves, and when copied to new iron woks the flavors all changed. The students thought they had learned wrong, but in fact the teaching materials had not stated the applicable conditions.

Only then did the teachers take stock of the warehouse. Which recipes were licensed, which were duplicates, which were copied incorrectly, which regions were missing, and which were only suitable for observation and not for training all had to be registered. Having a room full of paper did not equal having a usable set of teaching materials.

In the second year, the school filled in riverside stalls, mountain village dishes and seasonal snacks; removed erroneous copies, marked sources, and organized by cuisine, difficulty and ingredients. Students did not necessarily memorize more paper, but they knew how wide the world they had studied was and where gaps remained. When organizing, the teachers also kept a gap list. If recipes from a certain place could not be collected for the time being, they said plainly that it was not covered, to avoid students thinking all the city's flavors had been learned.

The principal also put a usage tag on each recipe book: teachable, researchable, archive only, requires authorization. What students received was no longer a pile of paper, but a set of materials with known boundaries.

When the culinary school later added recipes, it no longer asked only whether they tasted good. It also asked who wrote them, whether they could be taught, which type of customer they covered, and whether they duplicated old dishes. Materials had to pass a threshold before entering the school, so students would not be dragged off course by the storeroom.

Later, a famous shop refused authorization, and the principal preferred to leave a gap rather than secretly include it. Knowing about that gap made students safer than learning from a recipe of unknown origin. Usable materials must have quantity, quality, source and boundaries at the same time.

The collection of recipes in the warehouse determines what flavors students can learn and what they cannot see. The boundary of the materials is the boundary of the craft.