Biona Organic Rye Bread Pumpkin Seed 500g Vegan Bread Biona Organic Rye Bread Pumpkin Seed is a dense sourdough rye loaf with crunchy pumpkin seeds throughout. Suitable for freezing. Biona Organic Rye Bread Pumpkin Seed is a dense sourdough rye loaf with crunchy pumpkin seeds throughout.