Ouwelrondjes Sourdough Ø40mm 400 pieces Want to make your homemade sourdough bread or baked goods stand out? This unique edible label is perfect for that. Thanks to the heat resistance of the ouwelrondjes, they can be used not only for bread but also for various other food products. It is important that the ouwelrondje is applied to the dough prior to baking.