Serves 6 Ingredients 4 cups canola oil 2 cups all-purpose flour ¼ cup cornstarch 1 teaspoon baking soda 1 teaspoon baking powder 1 teaspoon salt Zest of 1 lemon Zest of 1 lime ½- 1 cup ice cold club soda, diluted with 2 tablespoons lemon juice 1 ½ to 2 pounds mixed fiddleheads, ramps (or…