I've been trying to figure out the best cut of beef to use for a German rouladen recipe. From the butcher and Google searches I've seen advice ranging from slicing flank steak (how would that work?) to pounding out a top round steak. (The final slice needs to be about 1/4 of an inch thick and 3+ by 6+ inches long and wide.)
Could someone suggest a cut of meat and a process for arriving at right kind of slice? (I would like to avoid pounding/tenderizing if possible.)