Scale Up Your Sourdough: Baking 4 Loaves at Once with Open Baking

Unlock Higher Production with Hannah's Open Baking Method

Want to boost your sourdough output without investing in a commercial oven? Hannah from Crusty Cravings shares a brilliant technique: open baking! In this tutorial, she demonstrates how she bakes four 900g sourdough loaves at a time in her home oven, significantly reducing bake times and increasing production for her microbakery. Let's dive into this game-changing method.

Why Open Baking?

Traditionally, sourdough baking often relies on Dutch ovens to trap steam, crucial for that characteristic oven spring and crispy crust. However, managing multiple Dutch ovens can be cumbersome. Open baking provides a solution, mimicking the steam environment of a Dutch oven while freeing up your oven space. Hannah’s method ingeniously uses a baking steel, cast iron skillet, lava rocks, and boiling water to achieve professional-level results at home.

Essential Equipment for Open Baking

* **Cast Iron Skillet:** A sturdy skillet to hold the lava rocks and provide even heat distribution. (Don't worry about it getting 'ruined' – it adds to the character!) * **Large Cutting Board:** Crucial for handling and transferring multiple loaves simultaneously. * **Heat-Resistant Gloves:** Essential for safety when working with hot equipment. * **Lava Rocks:** These rocks retain heat and release steam when boiling water is added. * **Baking Steel or Metal Pizza Steel:** Provides consistent, intense heat for excellent crust development. (Hannah uses Baking Steel Plus - get 10% off with her link!) * **Kettle:** For boiling water to create steam. * **Mist Bottle:** Used to add extra moisture during baking.

The Step-by-Step Open Baking Process

1. **Preheating is Key:** The night before, use your oven's delay bake function to preheat to 490°F (232°C) for about an hour. This ensures the baking steel and cast iron skillet (with lava rocks) are thoroughly heated. 2. **Prepare Your Loaves:** While the oven preheats, score your four 900g loaves on individual parchment paper. This prevents sticking and simplifies transfer. 3. **Steam Power:** Simultaneously, boil water in your kettle – this will be poured over the lava rocks to generate steam. 4. **Strategic Transfer:** Place all four loaves (on their parchment paper) onto a large cutting board for easy handling. 5. **The Bake:** Quickly slide all four loaves into the preheated oven. Cover the oven door with a towel to prevent accidental water spills (a broken oven door is no fun!). Ensure the score (ear) faces the oven door for optimal expansion. 6. **Initial Bake & Scoring:** Bake for 5 minutes at 490°F (232°C). Then, perform an “expansion score” – a small cut just under the ear – to encourage further rise. 7. **Reduce Heat & Steam:** Reduce the oven temperature to 450°F (232°C) and bake for another 15 minutes, continuing to generate steam. 8. **Rotation & Final Bake:** Remove the lava rocks, rotate the loaves for even browning, and bake for a final 20-22 minutes at 450°F (232°C), or until the crust reaches your desired color and internal temperature (206-210°F / 97-99°C).

Tips for Success

* **Oven Variations:** Every oven is different! You may need to adjust temperatures and baking times to achieve the best results. * **Proofing Matters:** Proper proofing is crucial for oven spring. * **Electric vs. Gas Ovens:** Electric ovens are generally preferred for open baking due to their more consistent venting. * **Parchment Paper is Your Friend:** Don’t skip the parchment paper – it makes transferring multiple loaves much easier. * **Loaf Size:** Hannah finds 900g loaves to be the sweet spot for baking four at a time. Larger loaves may stick together.