I just received a nice email from Muffintree14 thanking me for helping them make a recipe where they needed to meaure out ⅚ of a cup [1]! They were trying to measure out 200ml (milliliter) of something (they didn't specify what) and it turns out that 200ml is about ⅚ of a cup. I suspect they could have just used a regular cup, as that's 237ml. As long as you aren't baking bread (or other pastry-like food item) then it probably doesn't matter that much. Roughly speaking, 200ml is close enough to 1 cup that you might as well use 1 cup.
But then I found an image [2] (via Bob Anstett on TikLinkedMyFacePinInstaMeGramSpaceWeInTokTrestBook) describing the various relationships among Imperial units, and from there, I found a much better way to meaure ⅚ cups—measure out 1 cup, then remove 8 teaspoons; much better than the 2 ⅓ cup measures (or 1 ⅔ if available), a 1½ tablespoon and a ½ teaspoon. And maybe this will help someone else twenty years down the line.
![[2] /boston/2024/05/11/imperial.jpg](/gemini.conman.org/boston/2024/05/11/imperial.jpg){kind=link}