How do you list allergens in English without clutter?
In English only that dish's allergens are written, in a short line, not all fourteen on every card. The full list, if needed, sits once at the foot. Keep the line on dishes that have something to declare and empty on the ones that do not. In Madrid every English card carries a strip of fourteen words and the price cannot be seen. The card shows a short English line of what it does contain.