@liaizon
I didn't find a map. You can go in every food Market where you can buy Drinks. The only way for a map i found ist using Google Maps and searching for "berlin pfandflaschen". This gives you a map where someone wrote the Word Pfand in the comments. But this map only shows very little Shops. There are much more.
@rhiva I would estimate that only about a 1/4 of the supermarkets I have gone into have the pfand machines. Even places like Edeka or Lidl that are chains don't all have them. Thank you for looking though! I have just trying to understand the system a bit more
@liaizon
🤔By law they must take it. Some Stores take it at the Cash desk, i've Seen that before. I would say take one with you and ask.
Sorry i can't help more.
I'm living in Vienna since some years.
Gregory's Server
or someone who is good at german search engines maybe this is something you might be able to find that my anglophone self is not equipped for