I have some recipies for green smoothies, where some of the ingredients are for example "1 bunch of spinach" or "1/2 bunch of spinach".
The spinach I've found in the store are usually fresh leaves packed in a plastic bag of for example roughly 250 grams... But, how much is a bunch?
A bunch of spinach usually weighs something like 250-500 grams. My best guess is that something like half that is the stems, which can easily be as long as the leaves. So very roughly, I'd say a bunch is 125-250 grams. Alternately, if you want to go by volume (e.g. if your store has bulk loose baby spinach), think of a bunch as something like a head of lettuce, except with the bottom third to half mostly stems.
Full-size spinach also definitely gets a lot better than 4x6 cm leaves, so you may still be using somewhat more tender baby spinach, but that of course won't cause you any problems. (The stems on baby spinach are tender enough to eat, especially when blending, so you can use everything in your bags.)
In any case, smoothies are really forgiving - not only do you not need a lot of precision, but you can just add and blend until the color and flavor look how you want!
A bunch is the amount of a produce you can hold in you hand considering the picking and sales process
So for spinach, a bunch is a full handful holding the stems, you fingers do not need to touch, it just what you can hold on to comfortably
This is a very imprecise measurement
I dont have an answer more like a comment. I am now harvesting a lot of spinach. And selling per bundle. No my first dilemma was how much is a bundle. So I think of you look at the large whole leaves bundles that you buy in stores stringed at the bottom, a handful around the stems are a bundlef. One can weight that out of curiosity and see what a bundle then weights. It might come to the same answer in grams as previously discussed of 200 - 250 grams.
