Nutty Multigrain Sourdough Bread

Why This Nutty Multigrain Sourdough Bread Works

During the long rests, the sourdough starter slowly spreads through the dough and starts to puff it up. Water soaks into the bread flour, whole wheat flour, and oats, so the dough goes from rough and shaggy to smoother and stretchier. As the dough is stretched and folded, the gluten strands line up and get stronger, so they can hold in the gas from the starter instead of letting it leak out.

Over the next few hours, the seeds and walnuts sit in that wet dough and soften a bit, but they still stay crunchy enough to give texture. The oats drink up extra moisture, which keeps the inside of the bread moist without turning gummy. During the cold proof in the fridge, the dough keeps rising slowly and firms up, so it is easier to score and doesn’t spread out flat.

In the hot Dutch oven, steam stays trapped around the dough. The crust stays soft for the first part of baking, so the loaf can rise high before the outside dries out and turns deep golden and crisp.

Mistakes To Avoid

Letting the dough proof too long in the fridge makes it slump and spread instead of holding a tall shape. The gluten weakens and the bubbles get too big and uneven. In the oven, the loaf barely rises and bakes into a flat, wide bread with a gummy middle.

Skipping or rushing the stretch-and-folds leaves the nuts and seeds clumped in spots and the dough weak. The dough can’t trap gas evenly, so it rises in odd pockets and collapses in others. The baked bread ends up dense in some areas and full of big holes in others.

Adding extra nuts, seeds, or oats beyond the amounts listed packs the dough with heavy, sharp bits. These cut through the gluten strands and soak up water that the flour needs. The loaf comes out heavy, with a tight crumb that feels dry and crumbly instead of springy.

Placing cold dough straight from the fridge into a lukewarm Dutch oven prevents good oven spring. The outside starts to dry before the inside has a chance to expand. The crust sets early, and the bread bakes up short with a thick, tough shell.