100% paper is less suitable for direct food contact and for products sensitive to grease, moisture or oxygen, such as coffee beans, nuts, granola, spices or greasy snacks. Also, when long shelf life, aroma retention or a high barrier is needed, a paper pouch without an inner layer offers too little protection. In those cases, choose paper with a (bio)coating or a paper stand up pouch with an extra barrier and optionally a valve for optimal freshness.