German phrase
Welche Allergene enthält ~?
Meaning
What allergens are in ___?
When to use it
It asks about food allergens. This is a direct, polite way to check what a dish contains.
Example dialogue
Welche Allergene enthält dieses Gericht?
What allergens are in this dish?
Es enthält Milch und Soja, aber kein Gluten.
It contains milk and soy, but no gluten.