Mönchengladbach Walnut allergies are no joke: even traces of nuts can cause some people to have serious reactions.
So I can't eat pesto or other food. If empty glasses are still used to prepare homemade jam, for example, allergy sufferers can eat from it – assuming thorough rinsing. This is referred to by the German Association for Allergy and Asthma (DAAB).
Fundamental means in this case: with detergent and hot water, so the "dishwasher" has a high temperature. It's about 65 to 70 degrees. This eliminates all residues of the protein and thus the dangerous allergens.
According to studies, a combination of hot water is the best way to remove allergens anyway. Disinfectant is less reliable compared to its primary purpose of combating microbial contamination – but allergens are not among them.