Sourdough panettone help

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I tried to make sourdough panettone for the first time today with not the best success. I tried to follow mwilson's perfect panettone formula but wasn't sure of the actual process so I used a google translated version of Iginio Massari's method. I had my starter ready to roll and made the first dough last night and it rose to three times its original volume today. However, when I mixed the second dough today it was very loose. I mixed it in my KA mixer for about 30 minutes from start to finish but it never tightened up. It was more batter like than dough. I started the process of fermentation and folding it every 30 min but it still was loose after an hour, so I tried the mixer again and then it was totally shot. It never recovered from that second mixing.

I still have yet to cut into it and check out the crumb but it definitely didn't fill up the mold all the way and like I said seemed more like batter than a dough. I've watched videos of Roy Shvartzapel and his dough is like a rubber band when he touches it, springs right back. I know those are lofty goals, especially for my first try, but I'm just looking for any insight. I've seen people mention Cresci here but, being a student, I have limited funds and I don't think I have seen it listed for less than $200. I would appreciate any insight or advice anyone has as panettone is one of my favorite things around the holidays and I would love to be able to get a good sourdough one going. Thanks everyone!

Bread recipes (incl. pannetone) have a wide range of outcomes using different ways to get there. Many breads are not fussy and a delicious outcome is achievable almost no matter what you do. Pannetone, however, is one of those breads that has to have a "perfect storm" of temperature, acidity and gluten type/strength to make a good loaf. It is technically a challenging bread and Wild Yeast's blog is a beautiful writeup of her efforts over time.

I opted, one holiday, to make a more forgiving recipe for a fruited bread that was buttery and delicious. I called it "Pannetoche" because it was adapted from my "go to" brioche recipe. The recipients loved the lovely, buttery,fruited,scented gift bread that was so much less technically challenging during a high stressed, holiday time.

July sounds like a better time to perfect such a challenging recipe. Have some delicious fun! 

Cresci has actually been reissued a couple of years ago as a bilingual Italian/English book, somewhat condensed though, compared to the 2000 edition.  Of course it is just one of beautful Italian books that has never been available in the US. 

I actually tried to follow that recipe in that link but found the translation wasn't the greatest. I refreshed the starter every 4 hours over the course of 12 hours but maybe I need to keep a closer eye on it next time. Is there any way to reliably tell when it's ready other than looking for it to triple in volume (does it float like a more liquid starter does)?

I'm going to give it another shot this weekend but maybe will try the link that suave recommended earlier.

Thanks everyone!!

Thanks for this.  I had panettone on my mind to give a try.  And then Cooks' Country had a commercial yeasted one and I did that 3 times and kept reading around.

Then I tried the one featured in BBA.

I tried another one I found around also with a pinch of commercial yeast  at Weekend Project that was pretty lovely.

Today's bake is from Wild Yeast.  I feel like I am summoning up all that is necessary to do one without commercial yeast and I have my eye on Wilson's favorites from Massari.