These adorable little things look like miniature watermelons and have a taste and crunch like cucumbers. They are, according to Wikipedia, called Melothria scabra, also known as the cucamelon, which is a vine grown for its edible fruit. The fruits are about the size of grapes and taste like cucumbers with a tinge of sourness. Vernacular names include mouse melon, Mexican sour gherkin, cucamelon, Mexican miniature watermelon, Mexican sour cucumber and pepquinos.
We’ve found a variety of suggestions online for what to do with them, from refrigerator pickles, to cooked pickles (and think of as a replacement for cocktail onions to step up your martini game), to just snacking on raw. Here are a few links to get you started:
http://vomitingchicken.com/mexican-sour-gherkins-star-in-refrigerator-pi…
http://thecarrotrevolution.com/mexican-sour-gherkin-pickles/
https://www.bonappetit.com/test-kitchen/inside-our-kitchen/article/what-…
If you do nothing with them in a recipe, at least show them off on the crudite platter, because they are just as cute as can be, and so photogenic.