Blackberry Lime Cake - Oregon Raspberries & Blackberries

Ingredients

• 2 ¾ cups (342 grams) all-purpose flour
• 2 cups (400 grams) granulated sugar
• 2 ½ teaspoons baking powder
• ½ teaspoon baking soda
• ½ cup (227 grams) unsalted butter (2 sticks)
• 1 cup buttermilk, room temperature
• 5 large eggs (250 grams)
• ¾ teaspoon kosher salt
• 2 tablespoons lime zest, from 3-4 limes
• ¼ cup fresh squeezed lime juice
• 12 ounces (340 grams) fresh or frozen blackberries
• 2 tablespoons (25 grams) granulated sugar
• 2 tablespoons lime juice
• 6 egg whites
• 1 ½ cups (300 grams) granulated sugar
• 1 ¼ cups (564 grams) unsalted butter (5 sticks), room temperature
• ¼ teaspoon kosher salt
• 2-6 tablespoons of the Blackberry Sauce (see above)
• 4 ounces of fresh blackberries
• Edible flowers
• Lime segments