Roggenbrot / Schwarzbrot – 100% Rye Sourdough Recipe

Authentic German-style schwarzbrot made with a rye sourdough starter. Step-by-step schedule, science-backed tips for hydration, scalding schrot, and long fermentation.

At a Glance

Difficulty
medium
Active Time
40 minutes
Total Time
36+ hours (including cold retardation)
Yield
1 large loaf (approx. 1000–1200g)

This schwarzbrot is a classic, dense 100% rye sourdough that relies on long fermentation, high hydration and rye starter acidity to produce deep flavor and keep a moist crumb. Using a scalded schrot (coarse rye chops) or a high-hydration paste preserves moisture and activates rye pentosans for a cohesive crumb and shelf stability [1][2][6]. Weigh all ingredients with a kitchen scale for consistency.

✓ 100% rye with option for schrot (coarse rye) ✓ Long cold fermentation for flavor and digestibility ✓ No strong gluten development needed — technique over kneading

Not suitable if:

Ingredients

Weigh all ingredients on a kitchen scale. Rye is sensitive to hydration; accuracy prevents gummy crumb and under-fermentation [1][3].

Ingredient Amount % Note
Medium rye flour (Type 1150) 600g 100% Use fresh-milled or high-quality rye for aroma
Coarse rye schrot (optional) 100g 17% Scalded for texture — see tips [2]
Water (total) 700g 117% High hydration; part used for scalding schrot
Active rye starter 200g 33% Well-fed rye starter, 6–12 hours after feeding
Salt 12g 2%
Rye malt syrup or dark honey (optional) 20g 3.3% Adds depth and helps crust color

Schedule

Traditional Long Ferment

Build flavor with room-temp bulk then cold retard

Day 1 morning Scald schrot: pour 200g boiling water over 100g schrot, cover and rest 1–3 hours [2]
Day 1 afternoon Mix scald, remaining water, flours, starter and salt; rest (bulk fermentation) (4-6 hours at 20–22°C)
Day 1 evening Shape and place into a floured [banneton](https://amzn.to/4sNHBYO); refrigerate overnight (12–18h) for final proof
Day 2 morning Bake from cold or allow 1 hour at room temp before baking (60–80 minutes)

Accelerated Weekend

Shorter room-temp bulk with hotter proof

Day 1 morning Scald schrot 1 hour
Day 1 mid-day Mix and bulk ferment 6–8 hours at 22–24°C
Day 1 evening Shape and proof 2–4 hours, bake same evening (60–80 minutes)

💡 Tips

  • If bulk fermentation is fast, move shaped dough to fridge to slow proof and prevent over-acidification [6].
  • Cold retardation (12–24h) improves sliceability and flavour development [1][7].

Step by Step

1

Scald schrot (if using)

Place coarse rye schrot in a container and pour 200g just-boiled water over it; stir, cover, and let absorb for 1–3 hours. This hydrates the coarse grain, prevents dry pockets, and activates enzymes for sweetness and color [2]. Use a stable container or clear straight-sided container to monitor absorption.

✓ Visual check: Schrot should be swollen and creamy, not dry
⚠️ Common mistake: Skipping scald leads to hard dry pockets

⏱ 1–3 hours

2

Mix dough

In a large mixing bowl combine rye flour, scald, remaining water, and starter. Mix with a spoon or a dough scraper until homogenous — rye dough will be paste-like and sticky, not elastic. Add salt and mix thoroughly. Avoid adding extra flour; hydrate fully to let pentosans form a cohesive crumb [1][3].

✓ Visual check: Smooth, wet paste with no dry flour
⚠️ Common mistake: Adding too much flour to firm up dough → produces dry, crumbly crumb

⏱ 10 minutes

3

Bulk fermentation

Cover bowl with a damp cloth or lid and leave at 20–22°C. Rye develops acidity that strengthens structure; look for slight volume gain and aroma shift to mildly sour. For more tang, extend bulk or cold retard later [1][3].

✓ Visual check: Slight rise, surface with small bubbles and pronounced sour aroma

⏱ 4–8 hours depending on temp

4

Shape

Flour a work surface lightly with rye flour. Turn dough out using a dough scraper — it will be sticky. Shape gently into a tight oblong or batard; don't degas aggressively. Transfer seam-side up into a floured banneton or a towel-lined basket.

✓ Visual check: Evenly-shaped loaf with smooth underside

⏱ 5–10 minutes

5

Final proof / cold retard

Cover and proof. For best flavor and handling, retard in fridge 12–24 hours. Short proof at room temp (1.5–3 hours) works if you plan to bake same day. Use the poke test — dough should spring back slowly [7].

✓ Visual check: Loaf holds shape but still shows slight give when poked

⏱ 1.5–24 hours

6

Bake

Preheat oven to 250°C/480°F with a Dutch oven inside for 30–45 minutes. Turn loaf onto parchment paper, score with a bread lame (shallow scores suffice for rye), and place into the Dutch oven. Bake covered 15–20 minutes, then remove lid and reduce to 200°C/400°F for 40–50 minutes until crust is deeply colored. Check internal temperature with an instant-read thermometer: target 96–98°C / 205–208°F for fully baked rye [7].

✓ Visual check: Dark, firm crust; hollow sound when tapped

⏱ 55–75 minutes

7

Cool

Transfer loaf to a rack using oven mitts and cool completely (2–4 hours). Cutting early yields gummy crumb due to retained moisture and incomplete starch setting — patience preserves texture [1][4].

✓ Visual check: Loaf cooled through and flavor has settled

⏱ 2–4 hours

Tips & Variations

Variations

Schwarzbrot with molasses

Replace dark honey with 20g molasses

→ Darker color and a more pronounced sweet note

With toasted caraway

Add 1 tsp toasted caraway to dough

→ Classic flavor pairing for German rye

Higher schrot content

Increase schrot to 200g, scald extra water

→ More chew and rustic texture; adjust hydration accordingly

Pro Tips

  • 💡 Use a dough scraper to lift sticky dough — wet your hands instead of adding flour to prevent dry crumb [3].
  • 💡 Scalding schrot reduces dry spots and speeds enzyme activity for flavor — don't skip if using coarse grain [2].
  • 💡 Cold retardation improves sliceability and aroma; many bakers report better results after 12–24h in the fridge [6][1].
  • 💡 For professional crust, bake in a cloche or Dutch oven preheated so steam is trapped during the initial bake [7].

Common Issues

Common issues with 100% rye and how to fix them:

Storage

Bread box / paper bag

7–10 days

Keep whole loaf in a paper bag or closed bread box; cut side down once opened

Cloth wrapped

5–7 days

Wrap in linen or cotton to retain crust and allow moisture exchange

Freezing

3 months

Slice and freeze; thaw slices at room temperature or toast directly

⚠️ Avoid refrigeration — rye bread stales faster from cold-induced starch retrogradation [4][8].

Sources

  1. [1]
    BrotlieblingReines Roggenbrot mit Sauerteig - Brotliebling RezeptLink
  2. [2]
    BrotweinRoggenschrotbrot mit Sauerteig - Schrotbrot mit 100% Roggen - BrotweinLink
  3. [3]
    BrotbackliebeundmehrRoggenbrot mit Schrot und Sauerteig - BrotweinLink
  4. [4]
    Chefkoch / CooksSauerteigbrot mit Roggenschrot - ChefkochLink
  5. [5]
    Jo Semola / ChefkochRoggenvollkorn Sauerteigbrot - Jo Semola - BackrezeptLink
  6. [6]
    Kochbar / BrotweinRoggen Schwarzbrot - KochbarLink
  7. [7]
    The Perfect Loaf / Kochbar100% Rye Sourdough Bread - The Perfect LoafLink
  8. [8]
    King Arthur Baking / Jose MolaSourdough Rye Bread - King Arthur BakingLink