I’ll admit this loaf came out of a very unglamorous moment, a half bag of spinach going soft in my crisper drawer and a block of feta I’d bought for a salad I never made. I figured a sourdough loaf was as good a place as any to use them up, and honestly, I didn’t expect much from that first attempt. It turned out to be one of the better happy accidents in my kitchen. The kefir in the dough gave it a tang that tasted almost like a distant cousin of spanakopita, if spanakopita were a crusty, chewy loaf instead of flaky pastry.
This feta spinach kefir sourdough bread has earned a permanent spot in my baking rotation since then. Little pockets of salty feta and soft, wilted spinach run through every slice, and the crumb has that deep, chewy texture that only a long, slow ferment can give you. It’s savory enough to serve as a full side dish, not just a snack, and it disappears fast whenever I bring it to a potluck or serve it next to a big Greek salad.
Why This Recipe Works
- Kefir adds gentle tang. The natural sourness in kefir complements the salty feta beautifully, similar to how Mediterranean cooking often pairs tangy dairy with savory greens.
- Real Mediterranean flavor. Wilted spinach and crumbled feta give this loaf the same comforting flavor profile as spanakopita, without the fussy pastry work.
- Naturally fermented. No commercial yeast, just a slow rise that builds real sourdough flavor and an open, chewy crumb.
- A whole-meal loaf. Savory enough to serve as a side dish alongside soup, salad, or a Mediterranean-style dinner spread.
Basic Equipment You’ll Need
- Kitchen scale – for accurate flour, kefir, and water measurements
- Large mixing bowl – for mixing and bulk fermentation
- Small pan – for wilting the spinach
- Clean kitchen towel – for squeezing excess water out of the spinach
- Dutch oven – traps steam for a crisp, golden crust
- Banneton or bowl lined with a towel – holds the loaf’s shape while it rests
- Bench scraper – helps handle and shape the dough
- Lame or sharp razor blade – for scoring the top of the loaf
- Parchment paper – catches any feta that leaks out during baking and makes it easy to lower the dough into the hot Dutch oven
- Wire cooling rack – lets air flow under the loaf as it cools
Feta Spinach Kefir Sourdough Bread
Ingredients
Equipment
Method
- Mix the dough: In a large bowl, whisk 150 grams plain whole milk kefir, 180 grams water, and 100 grams active sourdough starter together. Add 500 grams bread flour. Mix until no dry flour remains. Cover and rest 30 minutes.
- Add salt: Sprinkle 9 grams fine sea salt over the dough. Pinch and fold until fully worked in. Cover and rest 30 minutes.
- Stretch and fold: Do 2 sets of stretch and folds, 60 minutes apart.
- Add spinach, feta, and garlic: Wilt 100 grams fresh spinach, wilted and squeezed dry in a dry pan for 2 minutes, cool, then squeeze out excess water. Toss the spinach, 120 grams feta cheese, crumbled, and 2 garlic cloves, minced in 1 tablespoons extra flour for tossing add-ins. Press the dough into a rectangle, scatter on the add-ins, then fold and do one more stretch and fold to distribute evenly.
- Bulk ferment: Cover the dough and let it rise at room temperature until it grows by about 50%. This takes 4 to 270 minutes depending on how warm your kitchen is.
- Shape the loaf: Turn the dough onto a lightly floured surface. Shape into a round or oval loaf. Place seam-side up in a floured banneton or bowl lined with a towel.
- Cold retard overnight: Cover the banneton and place it in the fridge for 8 to 480 minutes. This builds flavor and makes the dough easier to score.
- Preheat and score: Preheat your oven to 450°F (230°C) with a Dutch oven inside for 30 minutes. Turn the cold dough onto parchment paper (this catches any leaking feta). Score the top with a sharp blade.
- Bake: Place the dough into the hot Dutch oven with the lid on. Bake 45 minutes covered, then remove the lid and bake 20 to 25 minutes more, until deep golden brown.
- Cool completely: Move the loaf to a wire rack. Let it cool for at least 60 minutes before slicing. Cutting too early makes the inside gummy.
Notes
Recipe Details
Why Use Kefir Instead of Water
Kefir adds moisture and a gentle tang that plain water cannot. It works alongside your sourdough starter, not in place of it, the starter is still what makes the bread rise. Use plain, unsweetened whole milk kefir for the best balance with the salty feta.
Why You Must Squeeze the Spinach Dry
This is the step I learned the hard way on my first attempt, when I skipped it and ended up with a dough so wet I could barely shape it. Fresh spinach releases a surprising amount of water once it’s wilted, so squeezing it dry in a clean towel before adding it to the dough is essential, not optional.
Choosing Your Feta
Block feta packed in brine, crumbled by hand, has better flavor and texture than pre-crumbled feta in a tub, which is often drier and coated in anti-caking starch. If that’s all you have on hand, it will still work, just with slightly less creaminess in the finished loaf.
Why the Dough Rests So Long
Sourdough relies on wild yeast in your starter, which works much slower than store-bought yeast. This slow rise, combined with the natural tang from the kefir, is what gives this bread its deep, savory flavor. Do not rush the process, even on a warm day.
Storing Your Loaf
- Room temperature: Keep in a paper bag or bread box for up to 2 days.
- Fridge: Wrap tightly and store up to 5 days, though the crust will soften.
- Freezer: Slice first, then freeze in a sealed bag for up to 3 months. Toast slices straight from frozen.
Ways to Serve It
This loaf is wonderful alongside a Greek salad, a bowl of lentil soup, or simply toasted with a drizzle of olive oil. It also makes an excellent base for a Mediterranean-style sandwich with roasted vegetables and hummus.
Recipe Notes
- Use plain, unsweetened whole milk kefir for the best flavor balance with the salty feta.
- Wilt the spinach first and squeeze it thoroughly dry in a clean towel. Skipping this step makes the dough too wet to shape properly.
- Block feta crumbled by hand has better flavor and texture than pre-crumbled feta.
- Bake with parchment paper underneath the loaf, since melted feta can leak out during baking.
- Make sure your sourdough starter is active and bubbly before you begin. It should double in size within 4 to 6 hours of feeding.
- Let the loaf cool for at least 1 hour before slicing so the inside doesn’t turn gummy.
Nutrition Facts
Per slice (based on 12 slices per loaf). Values are estimates.
| Nutrient | Amount |
|---|---|
| Calories | 183 kcal |
| Carbohydrates | 30 g |
| Protein | 7 g |
| Fat | 4 g |
| Saturated Fat | 2 g |
| Fiber | 1.5 g |
| Sugar | 1 g |
| Sodium | 300 mg |
More Sourdough Recipes to Try
If you enjoyed this loaf, keep the sourdough baking going with these flavor variations:
- Blueberry Lemon Sourdough Bread
- Cinnamon Raisin Sourdough Bread
- Jalapeño Cheddar Kefir Sourdough Bread
- Chocolate Chip Kefir Sourdough Bread
- Cranberry Walnut Kefir Sourdough Bread
- Garlic Herb Kefir Sourdough Bread
- Everything Bagel Kefir Sourdough Bread
- Honey Oat Kefir Sourdough Bread
- Sun-Dried Tomato Basil Kefir Sourdough Bread
You may also like our Sourdough Kefir Bread recipe, and our guide on What Is Kefir? to learn more about the health benefits behind the tang in this loaf. New to sourdough? Start with our complete guide: How to Make a Sourdough Starter With Kefir.
Frequently Asked Questions
Can I use frozen spinach instead of fresh?
Yes. Thaw it completely and squeeze out as much water as possible, even more thoroughly than you would with fresh spinach, since frozen spinach holds extra moisture.
Why did my dough turn out too sticky to shape?
This almost always means the spinach wasn’t squeezed dry enough before being added. Use a clean towel and wring out as much liquid as you can.
Can I use a different cheese instead of feta?
Feta gives this loaf its classic Mediterranean flavor, but goat cheese is a reasonable substitute if you prefer a milder, creamier result.
Do I need a Dutch oven to bake this bread?
A Dutch oven traps steam and gives the best crust, but you can also bake on a hot baking sheet with a pan of water in the oven to create steam.
Why is my sourdough bread dense instead of airy?
Dense bread is often a sign of an underfed or weak starter, or not enough bulk fermentation time. Make sure your starter doubles in size before you start, and let the dough rise until it looks puffy and full of air pockets.
How do I know when bulk fermentation is done?
The dough should look about 50% bigger, feel light and jiggly when you shake the bowl, and show small bubbles on the surface. Watch the dough, not the clock, since timing changes with kitchen temperature.
Hi, I’m Natalia Smith, a kefir enthusiast and content writer dedicated to making fermented dairy approachable and enjoyable. My journey with kefir began in my own kitchen, experimenting with recipes and sharing the health benefits I discovered. Through hands-on experience and continuous learning, I aim to provide clear, trustworthy information that helps others embrace the goodness of kefir in their daily lives.