The Best Sourdough Chocolate Cake Recipe - Home Grown Happiness (2024)

ByElien

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This chocolate sourdough cake is filled with creamy chocolate frosting and topped with a rich chocolate ganache. It is the perfect way to use your sourdough discard starter and makes the best chocolate cake.

The Best Sourdough Chocolate Cake Recipe - Home Grown Happiness (1)

​Sourdough starter discard

This sourdough discard chocolate cake is the perfect recipe for using your excess sourdough starter! It’s a rich chocolate layer cake and makes a wonderful birthday cake or cake for any occasion.

The great thing aboutsourdough discard recipesis that you can save up all the starter discard in a jar in the fridge and use it when you want. Other sourdough starters discard recipes includepuff pastryandovernight sourdough pancakes.

Thissourdough cake recipedoesn’t rely on the yeast in the starter the way that sourdough breaddoes. It uses the acid produced by the Lactobacillus bacteria in the starter.

This starter hasn’t been fed in a while or passed its peak and is now very acidic. That’s not good forsourdough bread, but it’s great for this sourdough chocolate cake (orred velvet cake!) Don’t have a starter yet? Learn to make your own starter with thissourdough starter recipe.

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Ingredients

The actual amounts of the ingredients for this tender chocolate cake recipe are written in the recipe card at the bottom of this post. Here is a rundown of what you need.

  • Sugar – There’s a mixture of granulated and brown sugar for sweetness and moisture.
  • Large eggs – Eggs act as a binding agent, providing structure and stability. They also add moisture and fat.
  • Vanilla paste or good-quality vanilla extract – Vanilla adds depth of flavor, enhancing the chocolate.
  • Discard sourdough starter – The sourdough discard contributes a unique, slightly tangy flavor, balancing the sweetness of the cake. The acid in the starter creates a tender cake.
  • Vegetable oil. Oil creates a really moist cake. You could use light olive oil, liquid coconut oil, or neutral-tasting vegetable oil.
  • Salt – Enhances all the flavors.
  • All-purpose flour – The base of the cake.
  • Whole milk – Loosens the batter.
  • Cocoa powder (this can be natural cocoa powder or dutch processed cocoa powder)
  • Baking powder and baking soda – The leavening agents in the cake.
  • Hot coffee. I use instant espresso powder dissolved in boiling water. If you’re not a fan of coffee, don’t worry, you won’t taste it. The coffee helps to strengthen the chocolate flavor. If you want to leave it out, it can be substituted for hot water.

Fermented chocolate cake

Make the batter the night before and leave it to ferment in the fridge. This helps break down the starches in the flour and helps with digestion.Cover the bowl of cake batter tightly. This is an optional step.

Equipment

This sourdough chocolate cake is best baked in two 8-inch round cake pans. It can, however be baked in one larger pan and sliced in half, but it will bake more evenly when baked in two.

Method

Grease and line the cake pans with parchment paper.

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In a large mixing bowl, whisk together the flour, cocoa, salt, baking powder, and baking soda and set it aside.

In a separate bowl, whisk together the sourdough starter, eggs, vanilla, oil, milk, and sugars.

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Pour the wet ingredients into the flour mixture and fold gently for a minute before pouring over the hot coffee.

Mix the wet and dry ingredients briskly together but don’t over mix the batter.

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Pour the chocolate cake batter into the greased cake pans and bake until a skewer inserted into the center of the cakes comes out clean and the top of the cakes springs back when touched.

Let the cakes cool in the pan for 5 minutes before removing and placing them on a wire cooling rack to cool completely before frosting.

Frosting

In a bowl of a stand mixer fitted with a paddle attachment, beat the room-temperature butter until light and creamy.

Add the powdered sugar, cocoa powder, milk, vanilla, and salt to the butter.

Whisk on low speed to incorporate them, scraping the sides of the bowl as needed.Once incorporated, switch to medium-high speed and beat the mixture for another 1-2 minutes until it’s light and fluffy.

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Assembling

Switch to a rubber spatula and stir the buttercream in a spreading motion to smooth out some bubbles.

Spread ¼ of the buttercream on one cake round so it reaches the edges. Add the second cake round on top. Top this round with another ¼ buttercream and spread it out with an offset spatula.

Use the remaining buttercream to cover the edges of the cake, and use a dough scraper to smooth it out.

Chocolate ganache

The ganache topping is optional but adds a real decadent touch to the chocolate cake and it’s perfect for chocolate lovers.

Heat the cream in a small saucepan until just simmering. Take it off the heat and add in chopped chocolate. Let them melt, then stir them together until glossy.

Leave the ganache to cool and thicken before pouring it on the cake so it can spread in a thick layer.

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FAQS

Why use sourdough in a chocolate cake?

Sourdough starter adds a subtle tanginess to the cake, making the chocolate flavor more complex. Plus, it helps to leaven the cake, making it light and tender.

Can I use unfed sourdough discard for this cake?

Yes, unfed sourdough discard works perfectly for this recipe. It’s a great way to use up, discard and minimize waste.

How long can I store the cake?

Store at room temperature in an airtight container for 3-4 days or, in the fridge for about a week. It can also be frozen for up to 3 months. Just make sure to wrap it well to prevent it from drying out.

Variations

  • Sourdough Chocolate Orange Cake: Add the zest of an orange into the batter, and replace half of the milk with fresh orange juice. The citrus flavor pairs wonderfully with chocolate.
  • Sourdough Mocha Cake: Go heavier on the coffee to add mocha flavor. Add a tablespoon of instant coffee powder to the batter to give your cake a rich mocha flavor.
  • Chocolate raspberry cake: On the first layer of cake, spread out some of the frosting, then pipe a wide ring of frosting around the edge. Spoon in a layer of raspberry compote. Add the second layer of cake, and continue frosting with chocolate buttercream.
  • Sourdough Mint Chocolate Cake: Add 1/4 teaspoon peppermint extract to your cake batter and 1 teaspoon peppermint extract to the chocolate buttercream frosting.

Related recipes

Keen to make some other delicious recipes? Try this sourdough red velvet cake or other sourdough recipes that are not bread, like sourdough croissants or homemade sourdough waffles.

The Best Sourdough Chocolate Cake Recipe - Home Grown Happiness (8)
The Best Sourdough Chocolate Cake Recipe - Home Grown Happiness (9)

Sourdough Chocolate Cake

Yield: 8 inch cake

Prep Time: 20 minutes

Cook Time: 30 minutes

Total Time: 50 minutes

This rich sourdough chocolate cake is the perfect way to use your sourdough discard starter.

Ingredients

Cake batter

  • 220g (1 3/4 cups*) all-purpose flour
  • 70g (3/4 cup) cocoa powder
  • 1/2 tsp salt
  • 1 tsp baking powder
  • 1 tsp baking soda
  • 2 large eggs
  • 1 tsp vanilla extract
  • 180g (3/4 cup) vegetable oil
  • 100g (1/2 cup) sourdough discard starter
  • 130g (2/3 cup) granulated sugar
  • 130g (2/3 cup) soft brown sugar
  • 240g (1 cup) milk
  • 120g (1/2 cup) hot strong coffee

Chocolate Buttercream

  • 226g (1 cup) butter, softened to room temperature
  • 300-375g (2 1/2-3 cups) powdered sugar
  • 30g (1/3 cup) cocoa powder
  • 1/2 teaspoon vanilla extract or paste
  • 2-3 Tbsp milk or cream at room temperature
  • 1/4 tsp salt

Chocolate Ganache

  • 125g (1/2 cup) pouring cream
  • 150g (5oz) semi-sweet chocolate, chopped

Instructions

  1. Preheat the oven to 180°C (350°F), grease, and line two 8-inch round cake pans.
  2. Mix the flour, cocoa powder, salt, baking powder, and baking soda in a large bowl. Set it aside.
  3. Whisk together the sourdough starter, eggs, vanilla, oil, milk, and sugars in a separate bowl.
  4. Pour the wet mixture into the flour mixture and fold gently for a minute before pouring over the hot coffee.
  5. Mix briskly together but don't over-mix.
  6. Pour into the prepared cake pans and bake for 25-30 minutes until a skewer inserted into the cakes comes out clean.

Chocolate Buttercream

  1. In a stand mixer bowl fitted with a paddle attachment, beat the room-temperature butter until light and creamy.
  2. Add the powdered sugar, cocoa powder, milk, vanilla, and salt to the butter.
  3. Whisk on low speed to incorporate them, scraping the sides of the bowl as needed.Once incorporated, switch to medium-high speed and beat the mixture for another 1-2 minutes until it's light and fluffy.

Chocolate Ganache

  1. In a small saucepan, heat the cream until just simmering. Take it off the heat and add the chopped chocolate.
  2. Leave it to sit for 5 minutes, then stir until it is glossy and all the chocolate has melted. Let it cool down until it thickens before pouring on the cake.

Notes

* The cup sizes given are US-sized cups. Note that these are smaller than metric. For best results, use a kitchen scale and grams.

The calorie count for this recipe is for one serving of sourdough chocolate cake. It does not include the frosting or ganachetopping.

The batter can be made the night before and left to ferment in the fridge. This helps with breaking down the starches in the flour.

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Nutrition Information:

Yield: 12Serving Size: 1 slice
Amount Per Serving:Calories: 300Total Fat: 16gSaturated Fat: 12gUnsaturated Fat: 0gCholesterol: 29mgSodium: 301mgCarbohydrates: 39gFiber: 2gSugar: 24gProtein: 4g

Elien

I'm Elien. I love baking, especially with sourdough, and I'm passionate about sharing my recipes with you! You will find me spending most of my days either recipe testing in the kitchen, photographing food in my living room, or out in the garden. I'm so happy to have you here!

The Best Sourdough Chocolate Cake Recipe - Home Grown Happiness (2024)

FAQs

Can I use regular flour to make sourdough starter? ›

If you do not have whole wheat flour, just use all purpose flour instead. The starter will be fine. I switch to all purpose flour for the feedings because it's reliable, inexpensive and practical for everyday baking (remember, a portion of your starter is removed, discarded, or used for something else).

Can you add apple cider vinegar to sourdough starter? ›

If the mixture does not start to grow again by Day 6, add 1/4 tsp. apple cider vinegar with the daily feeding.

Can you add lemon juice to sourdough starter? ›

Some people like to add a little bit of lemon juice to help the process along. My recommended proportions are below. Third, stir the mixture in the jar until it become a thick paste. Finally, repeat every 12 hours for about a week.

How soon after feeding sourdough starter can I use it? ›

Fed sourdough starter refers to a starter that has been fed flour and water (preferably by weight). You should feed the starter equal or greater than its weight after discarding a portion. You should wait at least 2-4 hours or until the starter is at its peak before you use it in your baking.

What is the best flour for baking sourdough bread? ›

Whole wheat flour is an excellent choice for creating a sourdough starter due to its nutrient-rich composition and potential for fostering a robust microbial community. However, it's important to note that the quality of whole wheat flour can vary between brands.

What flour is best for sourdough bread? ›

Bread flour (or baker's flour) is a high protein, white flour that is milled specifically for baking bread and sourdough. You'll get the best results for your sourdough bread from using bread flour. The most popular bread flour in the US is King Arthur Bread Flour.

Does pineapple juice help sourdough starter? ›

Peter's method calls for starting with pineapple juice as opposed to water because “the acidity in the juice helps shorten the time to get the process started.” I very much liked the sound of this. Let's back up: a sourdough starter is a fermented mix of flour and water containing wild yeast and bacteria.

What is the secret to a good sourdough starter? ›

There is no single best ratio, but I've found a ratio of 1:5:5 fed twice daily at 12-hour intervals to produce a sourdough starter that's strong and healthy. This ratio corresponds to 20% ripe starter carryover, 100% water, and 100% flour (a mix of whole grain rye and white flour) at each feeding.

Why do you put baking soda in sourdough bread? ›

Baking soda or bicarbonate of soda can be used in sourdough bread to create a less sour loaf. Added after bulk fermentation, but before shaping, it can help to create a lighter, more fluffy loaf of sourdough.

Is it OK to use tap water for sourdough starter? ›

*If making sourdough is new for you, do not be discouraged if you starter takes longer to get active than mine – stick with it, it will happen! *Tap water is usually fine, if you are not sure, use boiled and cooled water, you can use it at room temperature or cool; do not use distilled water.

Why do you spray sourdough with water before baking? ›

Wetting the dough causes the surface to steam. Covering it traps the moisture. This partnership stops the bread from drying out on the surface in the hot air of the oven and forming a premature crust. Your bread rises more and produces a richer colour, becoming glossy on the surface.

What happens if you add honey to sourdough starter? ›

It seems to make it much faster - within one day the starter become visibly active and frothy. But with just the white flour as starter it takes at least 3-4 days to reach to that state of activity. I have also tried this at home and very surprised how it becomes active in just 1 day!!

Can I leave my sourdough starter out overnight after feeding it? ›

Can I leave my starter out overnight after feeding it? Yes, if you have just fed it. Since the night is rather long, feed it in a 1:4:4 ratio so that's not over fermented by the morning. If for example you use a 1:1:1 ratio, the starter would have peaked in the middle of the night, and collapse by the morning.

What happens if I forgot to discard starter before feeding? ›

If you didn't discard a portion of your starter each time you feed it, two things would happen: Your starter would grow to an enormous, unmanageable size. Your starter would likely become more and more inhospitable to the bacteria and yeast we want as the mixture would become ever more acidic.

Can you use starter that has fallen? ›

Past-Peak and Falling: If your starter/leaven is past-peak and is beginning to fall in height, it is beyond the optimal point to use it for baking, but it will still work. The only thing to consider is that once a starter peaks, it starts to become more acidic as it falls.

Can I use plain flour instead of bread flour for sourdough? ›

Plain flour is also rich in protein and has higher protein content than regular content which is great for making sourdough. The more protein you have in your flour, the more gluten can be developed in your dough. Low protein flours are more suitable for making crumblier textured goods, such as cookies or pastry.

Do you have to use unbleached flour for sourdough starter? ›

You need to use unbleached flour to make a starter, preferably a whole wheat or whole rye.

Can I use all-purpose flour instead of bread flour? ›

Bread Flour Substitute

You can always substitute all-purpose flour for bread flour one for one in any recipe that calls for it. Your bread might not raise quite as high or have quite as much chew, if you are using all-purpose flour, but it will still be delicious and homemade and all the good things.

Can I just add flour and water to my sourdough starter? ›

To Activate Your Sourdough Starter:

Place starter in a vessel. I love these deli quart containers for this purpose. Add 45 g each of all-purpose flour and room-temperature water. (Note: The consistency should look like a thick batter.)

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