Sourdough Lemon Cake
Bright, moist, and wonderfully tender, Sourdough Lemon Cake is a delightful way to use extra sourdough discard while creating a refreshing dessert full of citrus flavor. The tangy notes from the sourdough starter blend beautifully with fresh lemon juice and zest, resulting in a cake that is light, fragrant, and perfectly balanced between sweet and tart.
This cake is ideal for afternoon tea, spring gatherings, or a simple homemade dessert. The sourdough discard adds depth of flavor and helps create a moist crumb without making the cake taste overly sour. Topped with a simple lemon glaze, this cake becomes a bakery-style treat that’s easy to make at home.
Why Bake with Sourdough Discard?
Many home bakers accumulate extra sourdough starter when feeding their sourdough culture. Instead of discarding it, using it in baked goods like cakes is a fantastic way to reduce waste and add flavor.
In this recipe, sourdough discard contributes:
- Extra moisture
- A subtle tangy flavor
- A soft and tender texture
- Better depth of taste compared to standard cakes
The lemon flavor complements the mild tang of the sourdough, making this cake incredibly balanced and refreshing.
Ingredients
For the Cake
- 1 cup (240 g) sourdough discard
- 1 ½ cups (190 g) all-purpose flour
- 1 teaspoon baking powder
- ½ teaspoon baking soda
- ½ teaspoon salt
- ¾ cup (150 g) granulated sugar
- ½ cup (115 g) unsalted butter, melted
- 2 large eggs
- ¼ cup fresh lemon juice
- 1 tablespoon lemon zest
- 1 teaspoon vanilla extract
- ¼ cup milk or yogurt
For the Lemon Glaze
- 1 cup powdered sugar
- 2–3 tablespoons lemon juice
- ½ teaspoon lemon zest (optional)
Preparation Time
- Prep time: 15 minutes
- Bake time: 35–40 minutes
- Cooling time: 15 minutes
- Total time: about 1 hour
Equipment Needed
- Mixing bowls
- Whisk or electric mixer
- 9-inch cake pan or loaf pan
- Parchment paper
- Cooling rack
Step-by-Step Instructions
1. Preheat the Oven
Preheat your oven to 350°F (175°C).
Grease a 9-inch round cake pan or loaf pan and line it with parchment paper for easy removal.
2. Prepare the Dry Ingredients
In a medium bowl, whisk together:
- All-purpose flour
- Baking powder
- Baking soda
- Salt
Set this mixture aside.
3. Mix the Wet Ingredients
In a large mixing bowl, combine:
- Melted butter
- Granulated sugar
Whisk until smooth.
Add the eggs and mix until fully incorporated. Then add:
- Sourdough discard
- Lemon juice
- Lemon zest
- Vanilla extract
- Milk or yogurt
Mix until the batter becomes smooth and creamy.
4. Combine Wet and Dry Ingredients
Gradually add the dry ingredients to the wet mixture.
Stir gently until just combined. Avoid overmixing, as this can make the cake dense instead of soft.
The batter should be smooth and slightly thick.
5. Pour the Batter into the Pan
Transfer the batter into the prepared cake pan.
Spread it evenly using a spatula.
6. Bake the Cake
Bake the cake at 350°F (175°C) for 35–40 minutes.
The cake is ready when:
- The top becomes lightly golden
- A toothpick inserted in the center comes out clean
7. Cool the Cake
Allow the cake to cool in the pan for 10–15 minutes, then transfer it to a wire rack to cool completely.
Cooling helps the cake set and prevents the glaze from melting too quickly.
Make the Lemon Glaze
In a small bowl, whisk together:
- Powdered sugar
- Lemon juice
- Lemon zest
Mix until smooth and pourable.
Drizzle the glaze over the cooled cake and allow it to set for a few minutes before serving.
Tips for the Best Lemon Cake
Use Fresh Lemons
Fresh lemon juice and zest provide the brightest and most natural citrus flavor.
Don’t Overmix the Batter
Mix only until the ingredients are combined to keep the cake light and tender.
Let the Cake Cool Before Glazing
Adding glaze to a hot cake may cause it to melt and run off instead of setting nicely.
Adjust the Sweetness
If you prefer a sweeter cake, you can add an extra tablespoon of sugar to the batter.
Flavor Variations
Lemon Blueberry Cake
Fold 1 cup fresh or frozen blueberries into the batter before baking.
Lemon Poppy Seed Cake
Add 1 tablespoon poppy seeds for a classic lemon flavor combination.
Lemon Coconut Cake
Add ½ cup shredded coconut to the batter for extra texture.
Cream Cheese Frosting
Instead of glaze, top the cake with a light cream cheese frosting.
Nutritional Information (Per Slice)
Approximate values based on 10 slices.
- Calories: 260
- Carbohydrates: 34 g
- Protein: 4 g
- Fat: 12 g
- Saturated Fat: 7 g
- Sugar: 20 g
- Sodium: 180 mg
Storage
This cake stays moist and delicious for several days.
Room Temperature:
Store in an airtight container for up to 3 days.
Refrigerator:
Keeps for up to 5 days.
Freezer:
Wrap slices individually and freeze for up to 2 months.
Allow frozen slices to thaw at room temperature before serving.
Serving Ideas
This cake pairs beautifully with:
- Fresh berries
- Whipped cream
- Vanilla ice cream
- A cup of tea or coffee
It also makes a lovely dessert for brunch, picnics, or spring celebrations.
Final Thoughts
This Sourdough Lemon Cake is a wonderful example of how sourdough discard can be transformed into a delicious dessert. The combination of bright lemon flavor, moist crumb, and light glaze creates a cake that feels both comforting and refreshing.
Whether you’re trying to reduce kitchen waste or simply looking for a unique lemon dessert, this recipe is easy, flavorful, and sure to impress. Once you try baking with sourdough discard in cakes, you may discover it becomes one of your favorite baking ingredients.
