Blackberry Layer Cake Recipe – Sugar Geek Show

Ingredients

• 8 ounces buttermilk (slightly warm)
• 3 ounces vegetable oil
• 3 large eggs (room temperature)
• 1 Tablespoon lime zest ((About 1 lime))
• 1 Tablespoon lime juice
• 12 ounces all-purpose flour
• 11 ounces granulated sugar
• 1 teaspoon salt
• 1 teaspoon baking soda
• 8 ounces unsalted butter (softened)
• 2 Tablespoons all-purpose flour ((For dusting on blackberries))
• 4 ounces blackberries ((You can use frozen, but don't thaw them))
• 16 ounces fresh or frozen blackberries
• 1 tablespoon lime zest
• 2 tablespoons lime juice
• 1 tablespoon corn starch
• 1/8 teaspoon salt
• 24 ounces unsalted butter room temperature
• 24 ounces powdered sugar sifted if not from a bag
• 2 teaspoons vanilla extract
• 6 ounces pasteurized egg whites room temperature
• 2 ounces blackberry puree ((You can add more if you want to))
• 1 drop Americolor electric pink food coloring ((Optional))