St. Patrick’s Day is the perfect time to celebrate with traditional Irish flavors, and nothing is more classic than Irish soda bread. But instead of the usual baking soda-leavened version, this Sourdough Irish Soda Bread brings together the best of both worlds—authentic tangy sourdough flavor, the hearty goodness of organic Kamut flour, and a nod to the rustic simplicity of Irish baking.
Traditional Irish soda bread is known for its dense crumb, slightly sweet flavor, and rich, buttery texture. This recipe keeps that spirit alive while incorporating the benefits of a long-fermented sourdough, making it easier to digest while giving it a deep, complex flavor. Made with organic Kamut flour, a touch of natural sweetness, and a long, slow fermentation process, this loaf is the perfect way to honor the holiday while staying true to whole, nourishing ingredients.
Let’s dive into how to make this St. Patrick’s Day-inspired sourdough Irish soda bread!
Ingredients:
Sourdough Starter & Dough
- 4 cups + 2 tablespoons organic Kamut flour
- 1.5 cups warm filtered water (or organic cultured buttermilk for a richer flavor)
- 1/2 cup active sourdough starter (fed 6 hours before starting)
- 1 tsp French gray salt or sea salt (low lead)
- 2 tbsp organic raw honey or maple syrup (for subtle sweetness)
- 1 tsp baking soda (for the classic Irish soda bread texture)
- 1 tbsp organic avocado oil or melted grass-fed butter (for moisture)
- 1/2 cup organic raisins or currants (optional but traditional)
- 1/2 cup chopped organic walnuts or pecans (optional)
- 1 tsp cinnamon (optional, for a touch of warmth)
Instructions:
1. Prepare the Dough
Start with a very active sourdough starter, fed about six hours before mixing. In a large bowl, combine 1.5 cups of warm filtered water or buttermilk with 1/2 cup of active sourdough starter. Whisk until fully blended.
Slowly add 4 cups of organic Kamut flour and mix with a dough whisk or wooden spoon. Switch to using your hands when needed to ensure all the flour is incorporated. Sprinkle in 1 tsp of salt and 1 tsp baking soda, mixing well to distribute. Add 2 tbsp honey or maple syrup to lightly sweeten the dough, enhancing the traditional Irish soda bread flavor.
2. Knead & Stretch the Dough
Knead the dough by hand for about two minutes, just until it comes together. Cover the bowl with a damp cotton kitchen towel and let it rest for 30 minutes. Perform four rounds of “stretch and folds” every 30 minutes, gently pulling up on the edges of the dough and folding it over itself to build structure.
3. Bulk Fermentation
After completing the stretch and folds over two hours, coat a bowl with 1 tbsp avocado oil or melted grass-fed butter and place the dough inside. Cover and let ferment for 10-12 hours in a warm place.
4. Shape & Add Traditional Irish Ingredients
Once fermentation is complete, turn the dough onto a lightly floured surface. Stretch it into a rectangle and sprinkle in raisins, walnuts, and cinnamon if using. Fold the dough into thirds, then roll it into a ball. Let it rise for one final hour in a linen or cotton towel-lined bread basket.
5. Bake the Bread
Preheat a Dutch oven to 450°F. Carefully place the shaped dough onto butcher paper and transfer it into the hot Dutch oven. Cover with a lid and bake for 30 minutes, then remove the lid and bake for another 20 minutes until golden brown.
6. Cool & Enjoy
Let the bread cool completely before slicing. Serve with grass-fed butter, raw honey, or a smear of homemade jam for a truly traditional experience.
Why This Recipe Works
- Kamut flour gives the bread a hearty, nutty flavor, keeping it more digestible than modern wheat.
- Sourdough fermentation breaks down phytic acid, improving nutrient absorption and gut-friendliness.
- Baking soda provides a touch of the classic soda bread texture without overpowering the sourdough tang.
- Raisins, walnuts, and cinnamon add a hint of sweetness and depth, honoring the Irish soda bread tradition.
Celebrate St. Patrick’s Day with a Slice of Tradition!
This sourdough Irish soda bread combines the rustic, hearty flavors of traditional Irish baking with the benefits of long-fermented sourdough. Perfect for a festive breakfast, afternoon tea, or alongside a hearty stew, this loaf brings warmth and nourishment to any St. Patrick’s Day gathering.
Bake a loaf, share it with loved ones, and enjoy the taste of timeless, traditional, and nutrient-dense bread.




