I think what you mean for the sauerkraut is a heavy clay "crock". They are still around. Some people want a fortune for them, others just get tossed away in a box of junk at an auction or estate sale. Found an old brown and white one in my Dad's barn after he passed away and brought it home to start sourdough in.
You have me thinking-- based on some eaerly American history, the "kitchens" actually had a fire going most of the time, even in summer, and perhaps ther is a clue here somewhere about the drying process-- not sure of the specifics though. . . more musing about how to dry items in NEw ENgland where we have about hal hte summer days that are humid, and the others more dry; and come fall, the rainy season starts again.
Perhaps that is why ciders were often made; and fresh apples stored in barrels.
Talked to a friend today. She is from Poland and mentioned how her mom made sauer kraut. She had a big oak barrell that made enough to feed the family for a year. Not sure where to get food grade barrels these days. My mother used heavy clay . . . . cylinders-- not sure of the techinical name-- and made cucumber pickles.
Perhaps drying was a regional process . . . ?? Wonder if there is a way to dry using a small fire-- boys would love that . . .lol for all of 1 day!!! lol THen it would be a boring chore!!!!!
Smoked fruit??