sourdough sandwich bread

Here’s a complete guide to making soft, tender Sourdough Sandwich Bread at home. Unlike crusty artisan loaves, this version is enriched with milk, butter (or oil), and a touch of honey to create a pillowy crumb and golden crust that’s perfect for everyday sandwiches and toast.

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Why Sourdough Sandwich Bread is Different

Traditional sourdough has a crusty exterior, open crumb structure, and is baked at high temperatures (450°F+). Sandwich sourdough, on the other hand, is enriched with fats and dairy, has a tighter, more uniform crumb (so fillings don’t fall through), and is baked at lower temperatures (350-375°F) to preserve moisture and softness.

The key tweaks for softness:

• Moderate hydration (65-70%) instead of high hydration

• Added fats (butter or oil) to coat gluten strands

• Milk proteins to tenderize the crumb

• Lower baking temperature

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Core Ingredients

(Optional additions: 50g whole wheat flour for nuttiness, 1 tbsp milk powder for extra softness)

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Step-by-Step Method (Overnight)

Day 1: Mix & Bulk Ferment

1. Mix the dough – In a large bowl, whisk together active starter, room temperature milk, and honey until smooth. Add bread flour and salt, mix into a shaggy dough.

2. Add butter – If using butter, incorporate it gradually while kneading. If using oil, mix it in with the liquids.

3. Knead – Knead for 8-10 minutes (by hand or stand mixer with dough hook) until smooth and elastic. The dough should pass the windowpane test — stretch a small piece thin enough to see light through it without tearing.

4. Bulk ferment – Place dough in an oiled bowl, cover, and let rise at room temperature for 4-8 hours or overnight until increased by about 50-70% (not necessarily doubled). Perform 4 sets of stretch-and-folds every 30 minutes during the first 2 hours to build structure.

Day 2: Shape, Proof & Bake

5. Shape – Lightly flour your counter. Gently press dough into a rectangle the width of your loaf pan. Fold bottom third up, top third down (like a letter), then roll from one short end into a tight log. Pinch the seam and ends closed.

6. Second rise – Place dough seam-side down in a greased 9×5-inch loaf pan. Cover and let proof for 2-4 hours at room temperature, or overnight in the refrigerator. The dough is ready when it has risen about 1 inch above the rim of the pan. Don’t let it double — over-proofing causes collapse.

7. Bake – Preheat oven to 375°F (190°C). Optional: brush top with milk or egg wash for a shiny crust. Bake for 35-40 minutes until deep golden brown and internal temperature reaches 195-205°F.

8. Cool – Remove from pan immediately. Brush top with melted butter for a soft crust. Cool completely on a wire rack for at least 2 hours before slicing. Do not slice warm — it will become gummy.

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The Tangzhong Method (For Extra Softness)

For bread that stays soft for days, use this Asian baking technique:

Tangzhong (flour paste):

• 25g bread flour + 125g milk

• Whisk in small saucepan, heat over medium-low, stirring constantly until it thickens into a pudding-like paste.

• Cool completely before adding to dough ingredients.

This gelatinized starch locks in moisture, extending freshness without preservatives.

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Common Mistakes & Fixes

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Storage & Shelf Life

• Room temperature (3-4 days): Store in bread bag or wrapped in a kitchen towel. Avoid plastic bags — they trap moisture and encourage mold.

• Freezer (up to 3 months): Slice first, wrap slices in parchment, then place in freezer bags. Toast slices directly from frozen.

• Do NOT refrigerate — the cold temperature (35-40°F) accelerates staling.

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Flavor Variations

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Quick Visual Cues

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Equipment You’ll Need

• 9×5-inch loaf pan (metal conducts heat better than glass)

• Food scale (essential for accuracy)

• Digital thermometer

• Bench scraper

• Dough whisk or mixer with dough hook

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Enjoy your homemade sourdough sandwich bread! It’s a game-changer for lunches, toast, and everything in between. 🍞