This Cheddar Rosemary Sourdough combines a crisp, blistered crust with a soft, chewy crumb filled with sharp cheddar and fresh rosemary. It's perfect alongside soups, toasted with butter, or used for elevated sandwiches.
In a large bowl, mix together the sourdough starter and warm water until mostly dissolved.
Add the bread flour and salt, then mix until no dry flour remains. Cover and let rest for 1 hour.
Over the next 2 hours, perform 4 sets of stretch and folds every 30 minutes.
During the first set of folds, gently add the cheddar and chopped rosemary, folding carefully to distribute them evenly without tearing the dough.
Cover and allow the dough to continue bulk fermenting until it has increased by roughly 50%, appears airy, and jiggles slightly when the bowl is shaken. This usually takes another 3-5 hours depending on room temperature.
Turn the dough onto a lightly floured surface and gently shape it into a round.
Perform the final shaping, creating surface tension while keeping as much air in the dough as possible.
Place seam-side up in a well-floured banneton or towel-lined bowl.
Cover and refrigerate overnight for 10-14 hours.
Preheat your oven with a Dutch oven inside to 500°F (260°C) for at least 30 minutes.
Turn the dough onto parchment paper, score the top with a sharp lame or razor, and carefully transfer it into the hot Dutch oven.
Bake covered for 20 minutes.
Reduce the oven temperature to 450°F (232°C), remove the lid, and continue baking for 20-25 minutes, or until the crust is deep golden brown.
Cool completely on a wire rack for at least 1 hour before slicing.
Use freshly grated or cubed aged cheddar for the best flavour and melt.
Fresh rosemary provides a brighter flavour than dried.
Avoid overloading the dough with cheese, as too much can affect oven spring.
Every sourdough starter is different, so fermentation times may vary depending on your kitchen temperature.