Big slabs of hold-together, amazing strudel. Use frozen apple slices from the grocer or food service store or Costco for a slightly commercial style bakery strudel. Or use fresh and frozen or all fresh (of course). This makes a great homey tasting, but slightly deli-style strudel that is a good traveler (it's not a messy strudel; it holds up). If using Granny Smith apples, slice them thin and use a ton.