They call them "Brazilian" in this recipe, but my Gramma used to make these all the time and she was German and the German people called them Kiegla or something similar (I can't spell it and wouldn't know if it was correct spelling or not anyway!).  They are delicious, kinda like the donut holes you see in grocery store bakeries today, but better, not as greasy if you're careful how you fry them up.  Don't use an overabundance of oil/grease.

https://www.thespruceeats.com/brazilian-cinnamon-raindrop-doughnuts-3029714