Training of waitstaff on food allergens is essential, but the entire establishment should maintain an allergen-free kitchen and incorporate a company-wide food safety culture.
Understanding and implementing food allergen labeling is essential and following an in-house plant allergen control plan will help to mitigate cross-contamination.
Unlike foodborne infections that strike without warning, folks who have food allergies (or food intolerance) generally know of them and avoid the offending ingredients.
The new law requires food manufacturers to have processes in place that reduce or eliminate accidental cross-contact between non-allergenic foods and known food allergens.