You are right about the Quark, what You had was a Quark-Tasche and if You can not find Qaurk, then please mix 1/2 sour cream and 1/2 yoghurt and let it drain over night in a special drainer..it will not be is flaky and tart, as the original german Quark, but it will be rich and dense, and that is somthing, You must look for. Also note, that you can use any kind of ready to use puff-pastry dough, to prepare them, just follow instructions carefully and place a good amount of filling inside, .Prepare filling by adding lemon juice and sugar to taste, place on the pastry dough, fold over and brush lightly with egg wash, make sure, not to let the wash run down the sides, as it will prevent pastry from rising, cut 2 or 3 steamer slits on the top and sprinkle some sugar on top, if You like.
Bake according to instructions on the dough-box...this is the easiest, no-brain method.
You can spice it up dramatically, if You add raisins, that have been soaked overnight in high volume Rum, then please omit the lemon juice. Happy baking
