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Malted Rye Sourdough Bread

Malted Rye Sourdough Bread

2068kcal
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Prep 30 minutes
Cook 40 minutes
Rise & Rest Time 17 hours
Total 18 hours 10 minutes
Inspired by traditional Ukrainian baking, this deeply flavorful Malted Rye Sourdough Bread uses a hot boiling water soaker method. Scalding the rye flour and malt together creates a thick paste that coaxes out natural simple sugars, yielding an incredibly moist interior crumb, a rich dark crust, and a beautiful shelf life.
Cuisine Ukrainian / Eastern European Sourdough

Ingredients

The Rye Sourdough Starter (Night Before)
  • 10 g Ripe sourdough starter culture
  • 70 g Water
  • 70 g Rye flour
The Overnight Sweet-Sugar Soaker
  • 90 g Rye flour
  • 40 g Rye malt (Fine ground fermenting malt)
  • 200 g Hot boiling water
The Main Flour & Aroma Batch
  • approx. 470 g All of your prepared overnight active sponge (combined starter + soaker)
  • 100 g Rye flour
  • 290 g All-purpose flour (Or for a heartier profile, swap with 145g whole wheat flour + 145g AP flour)
  • 220 g Water
  • 9 g Salt
  • 18 g Sugar

Equipment

Method

Night Before – Starter Building & Hot Scalding
  1. 10:00 PM – The Starter Build: In a clean glass jar, dissolve your 10g of starter culture into 70g of water. Stir in 70g of rye flour. Mix thoroughly, cover loosely, and let it ferment at room temperature 74–78°F (23–26°C) for 8 to 10 hours until it reaches its peak and doubles or triples in size.
  2. 10:00 PM – The Hot Soaker: In a small heatproof bowl, whisk the 90g of rye flour and 40g of rye malt together. Pour all 200g of hot boiling water over the top and whisk into a thick, uniform paste. Cover tightly with plastic wrap and keep overnight in your oven with the interior light turned on to maintain a warm 80–90°F (26–32°C) micro-climate.
Day 2 – Sponge Activation, Main Mix, and Bulk Rise
  1. 8:00 AM – The Sponge: In a large bowl, combine your active 140g of peak rye starter with your entire container of warm overnight soaker. Mix thoroughly until completely smooth and integrated (take your time, as the soaker paste can solidify slightly overnight). Cover and let ferment at 74–80°F (23–27°C) for 3 hours until puffy and notably expanded.
  2. 11:00 AM – The Main Dough: Completely dissolve your 18g of sugar and 9g of salt into the 220g of water.
  3. Pour the liquid into your stand mixer bowl alongside your active, puffy sponge mass, 100g of rye flour, and 290g of all-purpose flour base. Turn the mixer to low speed and blend for 2 to 3 minutes until a shaggy mass forms.
  4. Increase the machine speed to medium and continue kneading for roughly 12 to 15 minutes until the dough clears the sides of the bowl. Watch the temperature carefully to ensure the heavy friction doesn't overheat the wheat matrix!
  5. Oil a large bowl as well as your hands. Round the sticky dough into a tight ball, place it into the greased bowl, cover, and let proof for 2 to 3 hours until it doubles in volume. Keep a close eye on the skin surface—the exact moment it begins to show tiny structural cracks across the crown is your signal that it is ready to shape.
Flour-Dusted Shaping & Bare Bake Setup
  1. 2:00 PM – Shaping: Generously dust your workspace with flour. Tip the expanded, delicate dough out. Gently pull all the outer edges into the center to form a round boule shape, flip it over, and roll it firmly under your hands to lock in a smooth skin.
  2. Transfer the round loaf seam-side up into a well-floured proofing basket. Let proof undisturbed for 1 hour until it expands and nearly doubles.
  3. While the loaf rises, place a heavy cast iron pan with its lid (or a baking stone) onto the middle rack of your oven and preheat thoroughly to 500°F (260°C) for 45 minutes to an hour.
  4. 3:00 PM – The Launch: Flip the proofed rye loaf gently onto a sheet of parchment paper so the floured bottom faces up. Note: Traditional dense rye breads do not require decorative slashing or scoring with a razor blade.
  5. Slide the loaf carefully onto the hot cast iron pan base, drop the lid down tightly to trap the steam, and bake at 480°F (248°C) with the lid on for exactly 10 minutes.
  6. Carefully remove the lid to expose the loaf, lower the oven temperature to 400°F (204°C), and continue baking bare for an additional 30 minutes until the crust turns an incredibly deep espresso brown.
  7. Remove from the oven. Using a pastry brush, immediately paint the screaming hot top crust with a light coating of clean water—this step softens the dense rye exterior into a delightfully thin, pliable bite. Let cool completely before slicing.

Nutrition

Calories2068kcalCarbohydrates437gProtein64gFat7gSaturated Fat1gPolyunsaturated Fat3gMonounsaturated Fat1gCholesterol14mgSodium669mgPotassium1414mgFiber39gSugar22gVitamin A13IUVitamin C0.3mgCalcium135mgIron20mg

Notes

  • Why the Warm Oven Light Soaker Method Wins: Keeping your scalded rye malt and flour paste resting at a warm 80–90°F (26–32°C) overnight serves a critical purpose. This heated environment encourages natural enzymatic activity to convert complex starches into simple, delicious sugars. This process gives your finished crust a beautiful dark color, a rich depth of flavor, and naturally locks in interior moisture to keep your bread fresh and soft for days.
  • The No-Scoring Flour Cracking Indicator: High-percentage rye breads carry significantly less elastic gluten than standard white sandwich loaves. Because the dough structure is dense and fragile, you do not need to score or slash the crown with a razor blade before baking. Instead, let the dough tell you when it's ready—as soon as you notice the surface skin starting to show tiny, rustic cracks during step 7, it has hit peak expansion and must be shaped immediately.
  • Handling Sticky Rye Dough with Success: Because rye contains a high amount of pentosans (sticky complex carbohydrates), the dough will feel noticeably more sticky and unmanageable than typical white flour structures. Do not panic or try to fix it by continuously throwing extra raw flour into the mixer. Lightly oiling your hands and your fermentation bowl during step 7 is the easiest way to round up the dough ball cleanly.
  • Substituting Rye Malt Powder for Grains: If you can only source whole malted rye grains from local breweries or specialty shops, simply run them through a clean coffee grinder until they turn into an exceptionally fine powder before scaling. If you don't have access to rye malt, you can substitute it dynamic-for-dynamic with diastatic barley malt powder or extra rye flour to achieve a similarly rich result.

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