Also, what is this?
I believe it is specifically a betel nut cracker.
Examples
I actually had a 25-year flashback to my father's Indian office colleague using one to prepare betel nut, leaf, and spices for chewing. Seemingly every minute or so.
More of a slicer than cracker, from south east Asia and have seen a fair few.
The forum always delivers!
@chez_jay started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
Also, what is this?