10:00 PM – Rye Starter Build: In a small glass jar, add your 5g of ripe starter culture to 40g of water and whisk together cleanly. Stir in 40g of rye flour. Mix thoroughly, cover loosely, and let it sit at room temperature 74–78°F (23–26°C) overnight for 8 to 10 hours until the levain reaches its peak, doubles or triples in volume, and exhibits a bubbly, aerated structure.

10:00 PM – The Sweet Malt Scald: In a bowl or directly inside a small lunch thermos, mix together 25g of fermented rye malt, 75g of rye flour, and 2g of crushed caraway seeds. Pour 250g of hot boiling water directly over the top and whisk vigorously until it forms a uniform, thick paste consistency. Seal the thermos tightly or cover your bowl securely and place it overnight into a turned-off oven with the oven light switched on. Let it mash for 9 to 12 hours at roughly 149°F (65°C) to break down the starches into fermentable sugars.

8:00 AM – The Sourdough Sponge Build: In a large mixing bowl, combine all 85g of your active overnight rye starter levain with 125g of room-temperature water and all 352g of your thick, sweet-scented overnight malt soaker. Whisk well to dissolve the dense soaker completely. Stir in 175g of rye flour until completely incorporated. Cover tightly and let it ferment in a warm environment kept at 80–85°F (27–29°C) for 2 full hours until the sponge looks incredibly puffy and expands noticeably.

10:00 AM – The Core Pastemix: Add all 737g of your bubbly fermented sponge into your stand mixer bowl (or keep it in a large mixing bowl for hand work). Add 100g of rye flour, 75g of all-purpose flour, 30g of brown sugar, 20g of deep molasses, and 9g of salt.

The Paste Integration: Attach a paddle or dough hook. Mix on low speed for 2 to 3 minutes, then increase to medium speed for an additional 3 to 4 minutes until everything is perfectly homogenized. (The Structural Reality: This dough will look exactly like sticky, thick mud. Do not attempt to develop elastic wheat gluten or pass a windowpane test—rye grains do not behave this way). Use a wet spatula or wet hands to scrape down the sides and round the sticky mass smoothly into the center.

Primary Bulk Proof: Cover the bowl tightly and let it proof undisturbed for 2 to 4 hours in a warm 80–85°F (27–29°C) proofing zone until it cleanly doubles in volume. Keep a very close eye on the top surface: the exact second you see small pinhole cracks begin to splinter across the crown, the bulk proof is complete and it must be panned immediately.

Panning & Smoothing: Grease a 9x4 inch loaf pan exceptionally well with a generous layer of butter, or line it cleanly with parchment paper. Using your wet silicone spatula, scoop the sticky, expanded mud-like dough directly out of the bowl and smooth it into the pan. Dip your spatula or hands into cold water and smooth out the top surface of the loaf until it is completely flat and level.

The Final Ambient Rest: Cover the loaf pan loosely and let it proof for exactly 1 hour in your warm 80–85°F (27–29°C) environment until it grows slightly. Traditional bakeries mist the top with water and sprinkle a layer of whole coriander seeds over the damp skin; alternatively, you can dust a fine coating of raw rye flour across the crown for a rustic finish.

The Step-Down Bake Cycle: Preheat your oven thoroughly to 450°F (230°C). Slide the loaf pan onto the middle rack and execute your baking cycle as follows: Bake Phase 1: Bake at 450°F (230°C) for exactly 15 minutes. Bake Phase 2: Drop the temperature cleanly to 410°F (210°C) and bake for another 15 minutes. Bake Phase 3: Drop the temperature a final time down to 355°F (180°C) and finish baking for 30 minutes to solidify the dense internal starches.

The Mandatory Flavor Cure: Remove the loaf from the oven and turn it out of the pan immediately onto a wire cooling rack. Allow it to cool down to room temperature. Once cool, place the entire bare loaf inside an airtight plastic bag or container and let it cure undisturbed for a full 24 hours before slicing.