Do you like Grüne Soße (Green Sauce)? Have you yet to try Grüne Soße? Or do you just enjoy a beer in the sun?
Plan is to enjoy what the Grüne Soße Festival Market has to offer. Live music, food stalls, and lots of beer/wine/cider options. The market is free to enter.
Whether you like, or have ever even heard of Grüne Soße before, it should be a good afternoon to meet new people in the sun.
Do not be put off if you do not know anyone going. I myself am new to Frankfurt :)