Here comes a classic potato-cucumber salad from Austria. A recipe by the famous austrian-german cook Johann Lafer. You can serve it lukewarm or cold to meat, classic would be Wiener Schnitzel, or fish and seafood.
https://www.wineberserkers.com/content/?p=6113
P.S. the liquid was a bit too much in this original recipe, so I recommend 1.2 kg potatoes (me 1kg) and maybe 1.5kg would work too. Anyway despite too much liquid, very tasty