The Best Sourdough Discard Lemon Loaf Cake
If you have sourdough discard sitting in your fridge and a few lemons on the counter, this sourdough discard lemon loaf cake might just become your new favourite bake.
This loaf is incredibly light, fluffy, and bursting with fresh lemon flavour. Even better? It’s naturally egg-free and dairy-free, budget friendly, and can be made in one bowl with simple pantry ingredients.
It’s the perfect recipe for those relaxed mornings when guests are coming over for tea and you want something homemade that looks impressive but takes very little effort.
What You’ll Get From This Recipe
• A soft, fluffy sourdough discard lemon loaf cake
• A brilliant way to use up sourdough discard
• A flexible recipe with sugar-free and flour-free options
Why You’ll Love This Sourdough Discard Lemon Loaf Cake
- Uses up plenty of sourdough discard – This recipe uses ⅔ cup sourdough discard, which makes it ideal for keeping your starter active while avoiding waste.
- Optional fermentation for better digestion – Because this loaf contains sourdough starter, the batter can be left to ferment for 7 hours before baking. This helps break down phytates in the flour and can make the loaf easier to digest.
- Naturally egg-free and dairy-free – Perfect for vegans, but also incredibly handy when the pantry is looking a little bare.
- Budget friendly – No fancy ingredients required. Just simple kitchen staples.
- One bowl recipe – Minimal washing up. Maximum reward.
Baking With Sourdough Discard
Most people think sourdough is only useful for baking bread. But sourdough discard is actually incredibly versatile. Once you start baking with it, you’ll quickly realise it can transform everyday recipes like:
The natural acidity of sourdough discard improves the texture, crumb, and softness of baked goods without leaving a strong sour flavour.
And the best part? The older your sourdough starter becomes, the better your baking gets.
Ingredients You’ll Need
This sourdough discard lemon loaf cake uses simple ingredients you likely already have in your pantry.
- Flour – Regular all-purpose flour works beautifully. If you’d like a more wholesome option, you can substitute finely ground oat flour using the same quantity.
- Sourdough starter – Use active starter or sourdough discard. Both work well in this recipe.
- Lemon zest and juice – Fresh lemons are essential here. The zest carries powerful citrus oils that give this loaf its vibrant flavour.
- Oil – Oil keeps the loaf extra moist and soft and prevents it from drying out in the fridge.
- Sugar – Regular sugar works best, but Truvia or other sugar alternatives can be used at about ⅓ the quantity.
- Baking powder – This is the main rising agent and gives the loaf its fluffy texture.
- Salt – Just a pinch enhances both the sweetness and the lemon flavour.
How to Make Sourdough Discard Lemon Loaf Cake
- Step 1: Preheat the oven – Preheat oven to 175°C (350°F). Line a standard loaf tin with baking paper.
- Step 2: Sift the dry ingredients – In a bowl sift together flour, baking powder, and salt. Sifting helps create a lighter crumb.
- Step 3: Mix the wet ingredients – In a separate bowl whisk together sourdough discard, sugar, oil, lemon juice, and lemon zest. Mix until smooth so the sugar dissolves fully.
- Step 4: Combine gently – Add the wet ingredients to the dry ingredients. Fold gently until just combined. Avoid overmixing or the loaf may become dense.
- Step 5: Bake – Pour batter into your prepared loaf tin. Bake 45–50 minutes until a skewer inserted into the center comes out clean.
Fermentation Option (Optional but Wonderful)
If you want the added benefits of fermentation:
- Mix all ingredients except the baking powder.
- Cover and leave the batter at room temperature for 7 hours.
- When ready to bake, fold in the baking powder and bake as usual.
This helps break down phytates in the flour and can make the loaf easier to digest.
Baking Tips for the Perfect Lemon Loaf
✔ Always use fresh lemon juice and zest
✔ Don’t overmix the batter
✔ Line the tin well (this loaf can stick)
✔ Bake in the middle of the oven for even heat
Cooling and Storage
Allow the loaf to cool completely before slicing.
Because this cake is egg-free and dairy-free, it stores beautifully.
Store:
• In an airtight container at room temperature for 2 days
• In the fridge for up to 5 days
The loaf stays wonderfully moist.
Serving Suggestions
This sourdough discard lemon loaf cake is delicious served simply with tea.
But if you want to dress it up a little:
• drizzle with lemon glaze
• serve with whipped cream and lemon curd
• add fresh strawberries or raspberries
• sprinkle with edible lavender flowers
It makes a lovely treat for morning tea, baby showers, or a ladies’ high tea.
Sourdough Discard Lemon Loaf Cake Recipe
Prep Time: 10 minutes | Cook Time: 45–50 minutes | Servings: 10 slices
Ingredients
2 cups all-purpose flour
⅔ cup sourdough discard (or active starter)
¾ cup sugar
½ cup neutral oil (sunflower, vegetable, or light olive oil)
¼ cup fresh lemon juice
zest of 3 lemons
3 teaspoons baking powder
½ teaspoon salt
Optional:
½ teaspoon vanilla extract
Instructions
- Preheat oven to 175°C (350°F) and line a loaf tin with baking paper.
- In a bowl sift together flour, baking powder, and salt.
- In another bowl whisk together sourdough discard, sugar, oil, lemon juice, and lemon zest until smooth.
- Pour wet ingredients into dry ingredients and fold gently until just combined.
- Transfer batter to the prepared loaf tin.
- Bake for 45–50 minutes until a skewer inserted in the center comes out clean.
- Cool completely before slicing.
Optional Lemon Glaze
For an extra burst of citrus:
Mix:
1 cup powdered sugar
2–3 tablespoons lemon juice
Drizzle over the cooled loaf.
Final Thoughts
Once you try this sourdough discard lemon loaf cake, it will likely become one of those reliable recipes you return to again and again.
It’s simple, bright, cheerful, and the perfect excuse to put that sourdough discard to delicious use.
And truly — there are few things better than a soft slice of lemon loaf and a hot cup of tea.
