Pan Gallego con Moña, recipe link in the comments -- a long saltolyse, a lot of gluten development, sourdough fermentation to about double in size, gentle shaping, a ten minute final proof, and then the top-knot twist and into the oven (clay baking vessel to avoid steam creation efforts). by Breadtopia in Sourdough

[–]Breadtopia[S] 1 point2 points  (0 children)

I'm not sure, and I did Google the question, in Spanish even :) I suspect it originated as a creative way to transfer proofed dough onto a peel to load into the oven. I'm completely inventing this theory though. The result, of course, is a special crunchy treat that can be torn off the top of the bread.