Germany made the allies to believe much more factories and infrastructure were destroyed than actually were. Additionally Germany has been shortly before that the scientific center of the world regarding Physics, Chemestry, Engineering… So the land of the thinkers and poets ("Dichter und Denker") obviously had a different starting point, no?
In that case, try Poland. It was destroyed very thoroughly and methodically, with all the famous German attention to detail, so to say. And the subsequent occupation by the Soviets didn't help either.
Looking at contemporary Poland, one would hardly believe that the country was a heap of ruins and dead bodies mere three generations ago.
I grew up next to the Polish border. In the 80s, the grocery stores were literally empty and everything had to be bought on the black market. In a country that is fairly agriculturally productive no less.
Don't lecture me on "socialism being a godsend". I saw it with my own eyes. It was a dirty, suffocating, ossified structure where prosperity was a crime, and so was any freedom.
I visited places like Cieszyn, Katowice and Sosnowiec when I was a kid, and anything beyond the most basic things had to be bought on the black market.
You could have bread and milk in the official grocery stores, as long as you were willing to rise early and stand in queue. By 10 am, already sold out.
Buying meat, IIRC, was already somewhat of a challenge. The authorities tried to "re-educate" people towards canned fish.
But the black markets were huge. Impressively huge. You could buy a lot of stuff there, plus sometimes peddlers went door-to-door selling stuff from their backpacks.
(I'm German, in case that matters).