20201010 Rus Brot’s French Baguette with CLAS

To learn more about concentrated lactic acid sourdough (CLAS), please see here and here




Recently, baguettes have been a hot topic on the forum. So I am posting this entry to join in the fun. 

I usually don’t make baguettes because they require more hands-on work than making boules or batards. The last time I made baguettes was a few years ago. I was so busy then that I hardly had enough time to sleep. Therefore, I could only upload pictures of baguettes and ignored all the details. To fill in the gap, I took pictures of my baguette workflow today.


I used Rus’s baguette formula that uses CLAS. I wish I had learned about CLAS sooner. It would have saved me a lot of work, and the outcome would have been just as good, if not better.  


Rus’s formula and procedures are as follows:


97% AP

70% water 18-20°C/64.4-68F (not higher) I reduced the hydration to 65% because Beehive can’t absorb 70% of water!

3% CLAS (cold +4-+5°C not fresh, at least 2-3 days in the fridge)

1% dry yeast

1.5-2% salt

3% malt


yields three 343g baguettes


Initial dough temperature 25°C/77F 



In spiral mixer x 8 minutes until it reached windowpane.



45 minutes, fold

45 minutes, fold

45 minutes, fold

keep dough temperature at 25°C/77F 



into three pieces; roll, and rest for 15 minutes 





45 minutes 




bake 20-22 minutes with steam at 250°C/482F 


Straight forward, isn’t it? Per Rus, 25°C/77F is the optimum temperature for yeast multiplication. At this temperature, LAB produces more acetic acid than lactic acid, and yeast also produces a small amount of acetic acid. LAB is slow at this temperature, so it’s suitable for creating the flavor of traditional baguettes.  


Speaking of temperature, unfortunately, my friend’s wife bought a Brod and Taylor proofer according to my suggestion. She complained that the proofer could not reach her target temperature. I forgot to remind her that the proofer’s internal temperature rarely matches the set temperature. Because its plastic panel is flimpsy, the proofer has poor insulation, so its temperature usually fluctuates with the ambient temperature. Using different thermometers to monitor the proofer’s internal temperature and reset the temperature back and forth, especially when making CLAS, is very important to ensure my sourdough’s quality. It is a pain to use, but I am stuck with it because there is no better product on the market.








I pretty much followed Rus’s procedures except one step – I divided the dough after the first 45 minutes of bulk, and I “pre-shaped” the dough in a rectangular container that would facilitate shaping later on. 









I followed the School of Slow’s baguette shaping method. It worked well for me a few years ago, and it is still perfect today!   People often complain that household ovens are too small to make baguettes. However, I found this to be an advantage,  because the baguettes have reached the maximum length suitable for household ovens after they are shaped, and the baguettes often look quite presentable at this stage. It eliminates the need to extend the dough at the end! I used the chopping board to gauge the length so that I was able to bake the baguettes vertically in the oven. 






 It’s better to start with a square dough to shape it in this form.



I proved the baguettes separately so that they are “social distancing” from each other in the oven after loading. 





To score, I used the “magic wand” shown in the picture.  It works wonders! When I scored the first baguette, due to lack of practice, I was a bit lost.   Then things got better, and I was most satisfied with the tapered one. 










That’s it! 

Oh, wait, the end products. 












I also want to tell you something exciting. I harvested my first tray of gold, black gold. I used the worm castings to brew my first bucket of compost tea and fed it to my plants. I’m sure that my garden plants are pleased because my kumquat tree is blooming in the second round, which is unprecedented. The aroma of blossom wafts in the air.  Many bees and hummingbirds are buzzing around to collect nectar—what a happy scene! 














  Before the wildfire started, I could see the beautiful clouds in the morning and the stunning sunset at dusk. I hope all the bad things will pass soon and we all return to normal life.           

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