It is advised that food and drink prepared, sold and administered may contain ingredients or adjuvants considered allergens. With reference to the EU regulation of 26 October 2011, n.1169 annex II.

Here is the table of the 14 food allergens:

AllergensExamples
Glutencereals, wheat, rye, barley, oats, spelt, kamut, including hybrids and derivatives
Crustaceans and derivatives
both marine and freshwater: prawns, langoustines, lobsters, crabs, hermit crabs and the like
Eggs and derivativesall products made with eggs, even if minimal. Among the most common: mayonnaise, omelette, emulsifiers, egg pasta, biscuits and cakes, even savory, ice cream and creams, etc.
Fish and derivativesncluding derivatives, i.e. all those food products that are made up of fish, even if in small percentages
Peanuts and derivativespackaged snacks, spreads and condiments in which there is even in small doses
Soy and derivatesmilk, tofu, spaghetti, etc.
Milk and derivatesyogurt, bbiscuits and cakes, ice cream and various creams.Any product in which milk is used
Nuts and derivativesall products which include: almonds, hazelnuts, common walnuts, cashew nuts, pecans and Brazil and Queensland nuts, pistachios
Celery and its derivativespresent in pieces but pure within preparations for soups, sauces and vegetable concentrates
Mustard and its derivativescan be found in sauces and condiments, especially mustard
Sesame seeds and derivativesin addition to whole seeds used for bread, we can find traces in some types of flour
Sulfur dioxide and sulphites in concentrations higher than 10 mg/kg or 10 mg/l expressed as SO2used as preservatives, we can find them in: canned fish products, in pickled foods, in oil and in brine, in jams, in vinegar, in dried mushrooms and in soft drinks and fruit juices
Lupine and derivativesnow present in many vegan foods, in the form of roasts, salami, flour and the like based on this legume, rich in protein
Molluscs and derivativescanestrello, razor clam, scallop, heart, sea date, fasolaro, garagolo, snail, mussel, murex, oyster, limpet, sea truffle, cockle and clam etc.