Sourdough Puff Pastry made With Discard Starter

Homemade flaky sourdough puff pastry is delicious and decadent. Real butter rolled in the layers makes it so flavourful, light and flaky.

I prefer sourdough puff pastry. Not only does sourdough's signature tang add flavour, but the fermenting of the dough makes it easier to digest and to roll out.

Sourdough may add on an extra day in time, but takes away some of the effort of rolling that traditional puff pastry requires.

The Sourdough Puff Pastry Process

Puff pastry is rolled out and folded multiple times to create the iconic layers, and the 'puff'. The fermented sourdough base dough is so pliable and doesn't resist rolling the way that regular dough often can if it's not allowed to rest.

Traditional puff needs 2 hours resting between each couple of turns to rest the gluten (if there are 6 turns in total, that's a lot of resting time!).

This sourdough puff pastry requires a shorter amount of refrigerated resting during the folds, only really to keep the butter chilled.

Discard Starter Pastry

There's no need to feed your sourdough starter for this pastry, an unfed or discard starter is best. The pastry relies on the bacteria to ferment the flour, and the water that evaporates from the butter gives it the rise.

Day 1 - The Detempre

Is the day to make the detempre, the initial dough. It's flour, sourdough starter, a little salt, melted butter and cold water.

This is roughly worked into a ball of dough, then placed in the refrigerator, in an airtight container for at least 8 hours and up to 20.

There's no need for kneading this dough. Unlike sourdough bread dough, you don't want to develop the gluten too much.

Day 2 - Lamination.

Lamination day. This is when a rather large amount of butter is rolled into the dough.

The dough is folded, turned and rolled out about 6 times to incorporate the butter and establish those layers. In between some of the folds (every second fold), the dough is chilled to keep the butter cool.

The butter needs to stay cool so it doesn't ooze out of the sides or melt into the dough. However it's also important to keep it a little pliable, so it's a similar consistency to the dough.

Lamination Steps

• Take two sheets of baking paper and slice 200 grams room temperature butter. Lay the slices of butter in a square on one baking paper sheet. Place the second sheet of baking paper overtop. Using a rolling pin, roll the butter out into a 20 x 15cm rectangle. 
• Place the butter in the refrigerator for around 10 minutes to firm up, but ensure it’s still pliable and not rock hard. 
• Take the detempre dough from the refrigerator and roll it out in front of you into a 20 x 30cm rectangle.
• Lay the cool butter on the dough on the bottom 2 thirds of the dough rectangle.
• Fold over the top third, over the butter. Take the bottom third and fold that over like a pamphlet (the bottom third will be both dough and butter.)
• The dough is now a horizontal rectangle. Turn it one quarter turn clockwise so that it is now a vertical rectangle. Gently push with a rolling pin a few times along the length of the dough to help work in the butter.

• Roll the pastry out into another 20 x 30cm rectangle and fold it once again into a pamphlet. Turn the pamphlet 90 degrees and roll it out again into a 20 x 30cm rectangle, and fold it up into a pamphlet.
• That was two turns and rolls in total. Now the folded dough needs to rest in the refrigerator for at least 20 minutes.
• After 20 minutes remove it from the refrigerator and lay it out on the bench so it is a vertical rectangle.
• Roll it out again into a 20 x 30 cm rectangle and repeat the folding, and rolling to complete another two turns. Chill the dough for at least 20 minutes.

Repeat this process one more time, so in total the dough was turned and rolled a total of 6 times.

Chilling The Dough

Chill the dough for a minimum of 2 hours in the refrigerator after the final turn.

Alternatively it can be frozen for up to 4 months to use at a later date. If you’re freezing it, let it thaw in the refrigerator or at room temperature before rolling it out. Don't let the dough warm up so the butter doesn't melt and the dough becomes too floppy to use.

Cooking Temperature and Time

The cooking temperature and time will depend on the recipe you use the puff pastry in. Puff pastry does best in an initially hot oven of around 220°C/425°F regular oven or 200°C/392°F Fan-bake for the first 10-15 minutes to allow the pastry to puff up nice and big.

Afterwards, the temperature can be lowered to let the pastry finish cooking through. The time needed for this depends on how the puff pastry is being used.

A good puff pastry will quadruple in height, and butter leakage should not be an issue. If you find your pastry is leaking, or it's not rising well it is probably the butter that hasn't been incorporated evenly.

Puff pastry can take a little practice, but even if it's not perfect, it's butter based pastry: it's always going to be yum.

One of my favourite ways to use puff pastry is by making flaky sourdough palmiers.

More Sourdough Discard Recipes 

• Blueberry Scones with Sourdough Starter
• Sourdough Chocolate Cake
• Peach Cobbler with Sourdough Biscuits
• Sourdough Banana Bread

Have you made this? Tag me and let me know! @home_grown_happinessnz