Ingredients

Equipment Needed

• •Large clean tablecloth or linen tea towel for stretching
• •Rolling pin
• •Pastry brush
• •Baking sheet lined with parchment
• •Fine sieve for powdered sugar

Instructions

1. 1

   Make the strudel dough

   Mound the flour on a clean work surface and make a well in the center. Add the egg, warm water, oil, vinegar, and salt. Work the liquid into the flour with your fingertips, then knead the dough for a full ten minutes. It will start sticky and resistant. Keep going. By the end it should be smooth, soft, and slightly tacky to the touch. Gretel always said the dough should feel like your earlobe when it's ready. Form it into a ball, brush the surface lightly with oil, and cover it with a warm bowl turned upside down. Let it rest for thirty minutes.

   The vinegar isn't for flavor. The acid relaxes the gluten, making the dough easier to stretch later without tearing. Don't skip it.

   Use griffiges Mehl if you can find it. Austrian coarse flour has a different texture than standard all-purpose and makes a more supple, forgiving dough. If you're using regular flour, add a splash more oil to compensate for the higher gluten content.
2. 2

   Prepare the filling

   While the dough rests, wash the grapes and dry them thoroughly. If your grapes are large, halve them. Small wine grapes can go in whole. Toss them in a bowl with the sugar, Vanillezucker, cinnamon, lemon zest, and rum if you're using it. Let this sit while you prepare the rest. The sugar will begin drawing juice from the grapes, which is exactly what you want. That juice becomes the sauce inside the strudel.

   If you can find small, intensely flavored wine grapes at a farmers' market, use them. They have more character than supermarket table grapes. A mix of dark and green varieties gives you the best balance of sweet and tart.
3. 3

   Toast the breadcrumbs

   Melt 40g of the butter in a small pan over medium heat. When it foams, add the breadcrumbs and stir constantly until they turn an even golden brown, about four minutes. They should smell nutty and warm. Take them off the heat immediately. Breadcrumbs go from golden to burnt in seconds and there's no saving them once they turn. The toasted breadcrumbs serve a purpose beyond flavor: they absorb the grape juice during baking so your strudel stays crisp instead of turning soggy from the inside.

4. 4

   Stretch the dough

   Preheat your oven to 190°C (375°F). Lay a clean tablecloth or large tea towel on your table and dust it generously with flour. Place the rested dough in the center and roll it out with a pin as far as it will go easily. Now put the rolling pin away. Slide your hands under the dough, palms down, knuckles up, and begin stretching it gently outward from the center. Walk around the table. Let gravity help. The dough should stretch to about 60 by 40 centimeters, thin enough that you can see the pattern of the cloth through it. If it tears in a spot or two, don't panic. Patch it by pressing the edges together. A small tear won't ruin anything.

   The thirty-minute rest is not a suggestion. The gluten needs that time to relax completely. If you try to stretch the dough early, it will snap back like a rubber band and fight you the whole way.
5. 5

   Fill the strudel

   Melt the remaining 40g of butter and brush it generously over the entire surface of the stretched dough. Scatter the toasted breadcrumbs evenly across the lower third, leaving a border of about three centimeters on each side. Spread the chopped hazelnuts over the breadcrumbs. Now spoon the sugared grapes over the nuts, distributing them evenly. Pour any juice that has collected in the bowl over the filling. Fold the side edges of the dough inward over the filling to seal the ends.

6. 6

   Roll and bake

   Using the cloth underneath to help you, lift the edge of the dough closest to the filling and roll the strudel away from you in one steady motion. The cloth does the work. You're guiding, not forcing. Let the strudel roll onto itself until the seam is on the bottom. Carefully transfer it to a parchment-lined baking sheet, curving it into a slight crescent if it's too long for the tray. Brush the top with the last of the melted butter. Bake for 30 to 35 minutes until the pastry is deep golden brown and the ends are visibly crisp. You'll hear it crackling faintly when you take it out. That's the sound of success.

   Brush with butter twice: once before baking and once ten minutes in. The second brushing helps the top layers separate and puff into those shattering flakes that make hand-stretched strudel worth the effort.
7. 7

   Rest, slice, and serve

   Let the strudel cool for ten minutes on the tray. Not longer. You want it warm, not hot, so the filling has time to settle but the pastry hasn't lost its crispness. Dust generously with powdered sugar through a fine sieve. Slice with a serrated knife into thick pieces. Each cut should reveal the layers: shattering pastry, then the golden breadcrumb barrier, then the soft, jammy grapes nestled among toasted hazelnuts. Serve with a generous spoonful of Schlagobers on the side, or warm vanilla sauce if the evening calls for it. Mahlzeit!

Chef Tips

• •The breadcrumb layer is not decorative. It's structural. Those toasted crumbs form a barrier between the wet grape filling and the delicate dough, absorbing juice so the pastry stays flaky. Skip them and you'll have a beautiful strudel for about five minutes before it turns to mush.
• •Grapes with seeds have more flavor than seedless varieties. If your guests don't mind them, use seeded grapes and don't apologize. Austrian grandmothers never bothered removing grape seeds from their strudel and nobody complained.
• •Stretch the dough on a tablecloth, not directly on the table. The flour clings to the fabric and prevents sticking. When it's time to roll, you lift the cloth and let gravity do the work. Trying to roll a filled strudel by hand is a recipe for torn dough and frustration.
• •This strudel is best the day it's baked. The pastry softens overnight as the grape juice migrates outward. If you have leftovers, reheat slices in a hot oven for five minutes to revive the crispness.

Advance Preparation

• •The strudel dough can be made up to four hours ahead, oiled and wrapped tightly in cling film at room temperature. It actually stretches more easily with a longer rest.
• •Toast the breadcrumbs and hazelnuts up to two days ahead. Store separately in airtight containers at room temperature.
• •The grape filling should be prepared no more than thirty minutes before assembly. If the grapes sit too long in sugar, they release too much liquid and the filling becomes waterlogged.

Frequently Asked Questions

Nutrition Information

1 serving (about 200g)