I do barbecue, but I can't remember every time someone orders kebabs. What should I do?

Don't use your head to buy a pen and a dozen small stickers. When people order them, they write down letters instead of abbreviations. For example, saury will write qdy oyster s h mutton kebab yrc, and a few will write X metaphor qdyX5 is saury five, so it is convenient and quick to write the corresponding table number.