My mom got me this pan for my birthday and I love making sourdough baguettes in it. They’re great for big sandwiches, garlic bread, dipping in oil and vinegar, and we’re planning to make French bread pizza with some.
1 cup of King Arthurs unbleached AP flour weighs about 120g.
1 cup of water weighs about 236g.
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So basically they are telling you to do 1:1 by weight but as others have noted, using a scale and going by weight is ultra important. Getting the right amount of flour by volume can be very tricky as packing it down can change things. I'd highly recommend getting a scale. They are pretty cheap. A good one will run you about $10.
Kitchen scale is required equipment for sourdough and to start using bakers percentages to make your bread. All hydration percentages for building breads in the best recipes I've seen are in percentages based on grams or ounces. It also helps prevent heavy hand when it comes to adding flour for consistent bakes. Scales also help scale recipes up or down too so very handy!
I recommend a digital scale that can do 1-2 decimal points so you could measure salt etc. You want something that could take up to 11 lbs and still maintain accuracy so you could put your vessels on it when you measure out. Digital is better than analog in this case.
This looks to be a relatively affordable scale that should get you started
https://www.amazon.com/dp/B08MJBSP83/ref=cm_sw_r_cp_apa_fabc_k4X4FbER9MBJ7?_encoding=UTF8&psc=1
I also recommend creating a journal to track your feeding schedule. And maybe a dedicated kitchen calculator.
Sure, here's the entire recipe.
It's from the book Flour, Water, Salt, Yeast