Croissant sourdough with frozen butter shavings

True laminated sourdough — the kind where you sheet a butter block into the dough and do six fully laminated turns over two days — is one of the hardest bakes there is. The cold butter shavings method is a cheating shortcut that gets you 70% of the way there for 30% of the work. The result isn't a real croissant and it isn't a normal sourdough. It's something in between: a sourdough boule with butter pockets and a hint of laminated layers, perfect for slicing thick and toasting.

The principle

Frozen butter, grated on the largest hole of a box grater, gets folded into your dough during the bulk fermentation. As the dough proofs cold, the butter stays solid. When the loaf hits the hot oven, the butter melts and steams, creating laminated-style pockets without any of the rolling-and-folding gymnastics.

Recipe (1 kilo)

Method

1. Mix flour, water, starter, salt — do an autolyse and one set of stretch-and-folds. Bulk ferment to 30% rise (~3-4 hours).
2. Place dough in fridge for 30 minutes to firm up. The dough must be cold to receive the butter without melting it.
3. Working fast on a cold counter, grate the frozen butter directly over the dough. Aim for even distribution — large flakes are good, you want visible butter pockets.
4. Letterfold the dough: bring the right third over the middle, then the left third over that. Rotate 90°. Letterfold again. The butter should be sandwiched in layers but not yet integrated.
5. Back into the fridge for 30 minutes.
6. Repeat: stretch the dough into a rectangle, letterfold twice, rest 30 minutes cold. Do this 3 times total.
7. Final shape (boule or batard) into a banneton. Cold proof overnight (12-16 hours).
8. Bake at 475°F covered, 20 minutes. Then 425°F uncovered, 20-22 minutes. Lower than usual because the butter content browns the crust faster.

What to expect

The crumb won't look like a true croissant — it's still mostly sourdough structure. But you'll see distinct golden pockets where the butter melted, and the crust will have a glossy, almost croissant-shellac quality. Sliced, it tears differently from regular sourdough. Toasted, it's incredible.

Selling it

This sells for $14-18 at farmers markets — real premium pricing. The ingredient bump (premium European butter, the cold dough handling) justifies it. Bakers who can produce this consistently usually turn into the favorite at their market within a few months.

It's not croissant. It's not sourdough. It's the bread you didn't know you wanted on a Sunday morning.