Mulberry Kuchen Recipe: Classic German Plum-Style Cake

Flour: Provides structure and texture for the cake.

Sugar: Adds sweetness and helps retain moisture.

Baking powder: Leavening agent that helps the cake rise.

Salt: Enhances and balances the cake’s flavors.

Butter: Adds richness and a tender crumb—use unsalted and soften before using.

Eggs: Bind ingredients and contribute to the cake’s structure.

Milk: Adds moisture and helps create a soft crumb.

Vanilla extract: Provides warm, aromatic flavor.

Mulberries: Fresh or thawed frozen mulberries provide the cake’s fruity character.

When working the butter into the dry ingredients, use softened (not melted) butter. Cut it into small pieces and use a pastry cutter, fork, or your fingertips to rub it into the flour until the mixture looks crumbly. This creates a light, tender texture in the finished cake. Gently fold in the berries to avoid crushing them and creating too much juice in the batter.

• All-purpose flour: Substitute with whole wheat flour for a nuttier flavor and more fiber; expect a slightly denser cake.

• Sugar: Substitute with honey for natural sweetness and added moisture; note the flavor will shift slightly.

• Baking powder: If needed, use 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar to mimic 1 teaspoon baking powder.

• Salt: Sea salt is an easy swap and may add subtle mineral notes.

• Unsalted butter: Use coconut oil for a dairy-free version; it will lend a mild coconut flavor.

• Eggs: Replace with flax eggs (1 tablespoon ground flaxseed + 3 tablespoons water per egg) for a vegan option and extra fiber.

• Milk: Almond milk or other plant milks work well as dairy-free alternatives; expect a slight change in flavor.

• Vanilla extract: Almond extract can be used for a different but complementary aroma—use sparingly, as it’s strong.

• Fresh mulberries: Fresh blackberries or a mix of berries make good substitutes with similar texture and tart-sweet balance.

• Cool the cake completely on a wire rack before storing to prevent condensation and sogginess.
• Wrap the cooled cake tightly in plastic wrap or aluminum foil, sealing edges to limit air exposure.
• Place the wrapped cake in an airtight container for extra protection against moisture and odors.
• Store at room temperature for 2–3 days in a cool, dry place away from direct sunlight.
• For longer storage, refrigerate up to a week—ensure it is well wrapped to avoid drying out.
• To freeze, double-wrap the cake in plastic wrap and foil, label with the date, and place in a freezer-safe bag or container.
• Freeze for up to 3 months. Thaw overnight in the refrigerator or for a few hours at room temperature.
• To refresh after thawing, warm the cake in a preheated oven at 300°F (150°C) for about 10 minutes to restore texture and warmth.
• Freezing individual slices with the same wrapping method makes it easy to thaw only what you need.

• Oven: Preheat to 300°F (150°C). Wrap the cake or slice in foil and warm for 10–15 minutes until heated through.
• Microwave: For a quick option, place a slice on a microwave-safe plate, cover with a damp paper towel, and heat on medium for 20–30 seconds, checking to avoid overheating.
• Air fryer: Preheat to 300°F (150°C). Warm slices in the basket 3–5 minutes, checking halfway to ensure even heating.
• Stovetop: Heat a non-stick skillet over low heat, cover, and warm a slice 2–3 minutes per side for a slightly crisp edge.
• Steam method: Use a double boiler or steam setup, cover the slice with foil, and steam 5–7 minutes to keep the cake moist.

• Oven: For baking the cake at the recommended temperature.
• Baking pan: A standard 9×13-inch pan works well; adjust time for other sizes.
• Mixing bowls: For combining dry and wet ingredients separately.
• Measuring cups and spoons: Essential for accurate measurements.
• Hand or stand mixer: Speeds mixing and helps create a smooth batter.
• Pastry cutter or fork: Useful for cutting butter into the dry ingredients to create a crumbly texture.
• Spatula: For folding in mulberries gently without crushing them.
• Toothpick: To test doneness—should come out clean when inserted in the center.
• Wire cooling rack: Allows the cake to cool evenly after baking.
• Parchment paper: Line the pan for easy removal and less cleanup.