Description
A visually stunning and deliciously unique cake made with purple yam powder, offering a moist and velvety texture, perfect for celebrations.
Ingredients
Scale
- 2 ¼ cups cake flour
- ¾ cup all-purpose flour
- 1 tablespoon baking powder
- 1 teaspoon baking soda
- ¾ teaspoon kosher salt
- 1 package purple yam powder
- ¼ cup canola oil or vegetable oil
- 4 ounces unsalted butter, softened
- ¼ cup vegetable shortening, at room temperature
- 2 cups granulated sugar
- 1 tablespoon pure vanilla extract
- Food coloring – mix equal drops of red and blue, or use ready purple dye
- 4 large egg whites, at room temperature
Instructions
- Preheat your oven to 325°F (165°C). Butter three 8-inch cake pans, line them with parchment paper, and butter the paper too. Dust lightly with flour and tap out the excess.
- In a small saucepan, combine 2 cups (480 ml) water with purple yam powder. Stir over very low heat until it thickens into a mash — it should look like creamy mashed potatoes. Once done, remove from heat and whisk in ¼ cup oil. Set aside to cool slightly.
- In a large bowl, sift together the cake flour, all-purpose flour, baking powder, baking soda, and salt.
- In your mixer, beat the butter and shortening on medium speed for 3–4 minutes until creamy. Add sugar and vanilla, then beat for another 3 minutes until pale and fluffy.
- Turn the mixer to low and add the flour mixture in three parts, alternating with the purple yam mixture — begin and end with the flour. Scrape down the sides as you go.
- In a small bowl, mix red and blue food coloring to create purple, or use a ready-made purple gel color. Add it to the batter gradually until you reach your desired shade.
- In a clean bowl, whisk the egg whites until soft peaks form. Fold these into your batter using a rubber spatula.
- Divide the batter evenly among your pans. Bake for 20–30 minutes, rotating halfway through. Cakes are ready when a toothpick inserted in the center comes out clean.
- Let the cakes cool in their pans for 20 minutes, then invert them onto a wire rack to cool completely before frosting.
Notes
Make sure to use room temperature ingredients for the best results. Sift flour for a lighter texture and rotate the cakes in the oven for even baking.
- Prep Time: 20 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 350
- Sugar: 30g
- Sodium: 400mg
- Fat: 15g
- Saturated Fat: 6g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 55g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 30mg