I sought it out at Wrangelstrasse by first calling. Arrived there without too much trouble, and found it to be a nice little natural food store, chock full of good green choices. After I did my tourist shopping, I picked one of their food cafe items, and sat down with a beer. That, and the coffee and desert, were excellent, while a moderate stream of customers came and went.
An excellent little neighborhood place, which must have history, too. Nice staff. The kind of place that can last into the new society.