As promised, a more difficult nut for today!
I will give this one 3/5 difficulty.
Photo credit: Lior Golgher, CC BY-SA 4.0 https://creativecommons.org/licenses/by-sa/4.0, via Wikimedia Commons
Hint:
spoiler
This nut is named for its most common country of origin.
Answer and some fun facts about this nut:
spoiler
It's a Brazil nut! Brazil nuts are fairly unique among nuts one might commonly see in a grocery store. They are not a domesticated crop like most other nuts, and are mainly wild-harvested from the Amazon rainforest. Some have advocated this as a model of a sustainable economic activity in the rainforest, but other studies have noted that in areas where nuts are heavily harvested, the regeneration of the species is poor.
Tune in tomorrow for more nutty knowledge!
Yikes!