The apple work had been completed for us - peel, core, slice about 4 cups of apples (e.g. Golden Delicious, Granny Smith, Gala or even a mix), sprinkle on a couple tablespoons sugar, a couple of shakes of cinnamon and a couple tablespoons raisins. Mix it up and set aside. Remember - your dough must be made ahead and ready for you, so wait to mix up your apples until assembly time.
Johann’s dough recipe is simple: 210 g / 1.66 cups flour (recommended ~12% protein which FYI is in between King Arthur’s all purpose and bread), 125 ml / 1/2 cup water, 1 tablespoon neutral oil like sunflower or canola (consider olive oil for a savory strudel) and 1/4 teaspoon salt. Blend all in a bowl and knead by hand to a smooth, silky dough. Lightly oil the dough, cover and rest two hours.
NOTE: I did a quick review of a couple of other strudel recipes, both of which use egg yolk and vinegar (helps tenderize) in the dough and one which utilizes a long mixing time and an overnight rest in the fridge before proceeding. Hmmmm . . . . . . future project methinks.
Rolling and stretching time! It’s very helpful to have a square table, something you can walk around to stretch the dough. Cover the work surface with a large tea towel, linen or oilcloth tablecloth, flour it and place the dough in the center. Flour the dough surface, turn over and flour again; roll out to a round (mine is rather oblique). Johann cautions not to lift/rotate the dough as you might for tart or pie dough - just roll.