Plugrà - Pistachio Cake

Ingredients

• 2 cups (260g) all-purpose flour
• ⅓ cup (40g) ground unsalted pistachio nuts
• 2½ tsp. (12g) baking powder
• ½ tsp. (2.4g) baking soda
• ½ tsp. (3g) salt
• 5 lg. (250g) eggs, separated
• ¾ cup (170g) Plugrá® Premium Butter, unsalted, softened
• 1¾ cups (350g) granulated sugar, divided
• ¼ cup (56g) vegetable oil
• 1 tbsp. (14g) pistachio paste
• 1 tsp. (5g) vanilla extract
• 1 cup (245g) whole buttermilk