> Kitchen work is all about proportions
Only in Imperial/United States customary units. They start with a few unconvincing metric examples, then throw away the pretence and jump right into cups, tbsp, etc.
If you'd stop using Imperial, and started using metric + scales, the entire problem domain no longer exists.
TIL that you never double a recipe when using metric units...
Bases for cases. One of the advantages of Imperial measurements is that they are divisible by more factors than 2 and 5. This is where metric falls down for cooking. NB: I know the metric system and use it daily, but it's not perfect for every use case.