Chocolate Olive Oil Cake | Umami

Ingredients

• Nonstick vegetable oil spray (for pan)
• 1½ cups (300 g) granulated sugar
• 1⅓ cups (167 g) all-purpose flour
• ½ cup (57 g) Dutch-process cocoa powder (see notes)
• 2 tsp. Diamond Crystal or 1¼ tsp. Morton kosher salt
• ¾ tsp. baking soda
• 2 large eggs
• ½ cup buttermilk
• ½ cup extra-virgin olive oil
• 1 Tbsp. vanilla extract
• 6 oz. unsweetened chocolate (preferably Guittard), chopped
• ¼ cup extra-virgin olive oil; plus more for drizzling (optional)
• ¾ tsp. Diamond Crystal or ½ tsp. Morton kosher salt
• 2 cups (220 g) powdered sugar
• Flaky sea salt