About the online training Allergies & diets: In this course we will help you familiarize yourself with the world of allergies and diets. Now that everyone wants to get healthier, guests have more and more questions and demands. You will probably have heard that someone would like to eat and drink gluten-free or, for example, lactose-free? Do you always know what they mean by that? After this course you will know anyway and you will never have to doubt it again!