It also directly contradicts the gold-plated rule. "No, you're not allowed to chop up that potato, you have to buy a tiny and expensive tray of pre-cut vegetabl

It also directly contradicts the gold-plated rule. "No, you're not allowed to chop up that potato, you have to buy a tiny and expensive tray of pre-cut vegetables that lasts half as long in the fridge!" It's a pretty easy UX problem to solve, too, if you're writing recipes manually: just say "one carton of stock (or make your own)" and link to another recipe. If the goal is to teach, why put barriers in front of your students to stop them progressing when they're ready?