Scones From Scratch Recipe | Alton Brown

Ingredients

• 2 cups all-purpose flour
• 4 teaspoons baking powder
• 1/4 teaspoon baking soda
• 3/4 teaspoon kosher salt
• 1/3 cup sugar
• 4 tablespoons unsalted butter, chilled
• 2 tablespoons shortening, chilled
• 3/4 cup heavy cream
• 1 large egg, lightly beaten
• 1/4 cup dried currants or dried cranberries, optional