Support for Partial Ingredient Amounts

[gm-walker]

the problem

Some recipes call for some of the total amount of an ingredient.

• For example, the recipe for Creme Brulee Donuts asks to use 1 tsp of sugar at the start, then asks for the remainder of the 1/3 cup later on.

While this doesn't cause any issues for figuring how much is used in the entire recipe (after all, you can write 1 tsp of @sugar{1/3%cup}), it does when you are showing how much is used per step.

• Should you use @sugar{1%tsp} as the step requests? (not good)
  • Reflects the amount used in the step, but force you to create duplicate "sugar" ingredients to capture the correct amount.
• Should you use @sugar{1/3%cup} which the entire recipe needs? (not ideal)
  • Reflects the amount used in the recipe, but it would make the per-step annotations useless

TL;DR: Cooklang is all-or-nothing. You either use the ingredient or you don't.

a potential implementation (feat)

A potential solution would be modifying the existing syntax to include an optional total amount of an ingredient, like this: @ingredient{ [amount to use] ; [total amount (optional)] }.

• Omitting the total amount is the same as the current syntax (minor refactoring).
• Adding total amount allows Cooklang parser to know how much the whole recipe calls for separate from how much the step calls for.
• Bonus: Add remaining as a quantity to calculate the amount after prior steps.
  • ex. @sugar{remaining} after @sugar{ 1%tsp ; 1/3%cup } would be "15 tsp" or "0.3125 cup(s)"

[jmaillot]

+1 for this FR, i was also looking for something like this

[ginkogruen]

Wouldn't the reference modifier language extension address this issue in part?

It's currently not supported by cook-cli but the parser understands it (And I would really like to see it supported).

[gm-walker]

This would handle the issue.
Has this been implemented?