I didn't notice any deliberation on the goals of the project and whether there is any benefit at all to creating a typed recipe model, whether it's a simple one

I didn't notice any deliberation on the goals of the project and whether there is any benefit at all to creating a typed recipe model, whether it's a simple one that only covers some cases or a complicated one that tries to cover all of them. If the goal is to publish the recipe on a website for humans to see, you just need the raw blob of text. If the goal is to calculate calories, you can drop anything that isn't edible, focus on ingredients with a standard unit of measure, and notify the user if the recipe contains ingredients for which the calorie contribution couldn't be determined. If the goal is automated production, all of this is likely irrelevant. Etc... If your goal is to cram types into things to make them cool, unsurprisingly this goal does not give you a basis to make design decisions.