Your Stale Sourdough Isn't Hopeless: This Quick Trick Brings It Back To Life

The proverb "when life gives you lemons, make lemonade" applies to a plethora of life's discouraging, unforeseen situations, certainly including how to deal with sourdough bread that's on the decline. Stale sourdough is terrific for making French toast, whipping up a batch of bread pudding, and creating crispy homemade croutons. For sandwiches, however, it doesn't hit the mark. Thankfully, all is not lost if you discover your sourdough is drying out. By reintroducing moisture to your hard loaf, you can bring it back to life and enjoy the lunch you're craving.

This trick doesn't require any fancy equipment or culinary know-how. If your sourdough is just starting to go stale, preheat your oven to 300 degrees Fahrenheit. If it feels like you would chip a tooth trying to bite into it, crank it up to 375. While the oven heats, run tap water over the whole loaf. Not to the point that it's sopping wet, mind you. An even layer of moisture on the crust is ideal.

Put the stale sourdough right on the oven rack and bake for 5 to 20 minutes, depending on the size (larger loaves will require a longer baking time). Once your kitchen starts to smell like a bakery, pull the sourdough out with oven mitts and gently squeeze it. The crust should remain firm, but the loaf should have some give, indicating the interior has regained its soft crumb.

The ability to bring stale sourdough back to life with water seems too good to be true, but science says otherwise. All the moisture that helps create a soft, crumbly texture in bread dissipates over time through retrogradation. The starches harden and become dense during that process. When you douse the bread in water and introduce heat, the water becomes steam and rehydrates the starches, revitalizing the texture of your sourdough.

If you're in a hurry or just trying to soften a couple of slices for a sandwich, you can use the microwave to save stale sourdough. Wrap it in a few wet paper towels and heat it in 10-second intervals. The crust won't resemble what it was when freshly baked, but the microwave will revive small portions of sourdough bread for a quick lunch. However, when using the microwave to restore quality, you want to eat it as it comes out of the appliance. It only takes a few minutes for the bread to become unappealing again.

It may go without saying, but there is a point of no return for sourdough bread. If it's slimy, fuzzy, or smells off, it's beyond saving because those are all signs that bacteria or mold have settled in. Unfortunately, that loaf is destined for the trash bin, and you'll have to bake a new one with your ripe sourdough starter.