Labneh is a tangy Middle Eastern dairy spread made by straining yogurt to a creamy, cheese-like consistency, often garnished with olive oil and herbs and served as part of a mezze.
To the best of my knowledge, all of the ingredients used in this recipe are gluten-free or widely available in gluten-free versions. There is hidden gluten in many foods; if you're following a gluten-free diet or cooking for someone with gluten allergies, always read the labels of your ingredients to verify that they are gluten-free.