- Our Black Walnut French Roast coffee is a mouth-watering naturally flavored dark French Roast coffee with Black Walnut Leaf, Walnuts and Rose Petals that you can enjoy all year round! The dark, smoky aroma and Black Walnut flavor is a delight! - Ingredients: French Roast (whole coffee beans), Black Walnut Leaf, Walnuts, Rose Petals and Natural Black Walnut Flavor.