Chicken feet: skin and tendon over small bones, with no real meat, cooking to a soft, gelatinous chew. Simmered in soy sauce and spices, marinated cold in vinegar or cooked in soup with peanuts; seasoned packs are a snack.
Pickled-pepper chicken feet are the snack she always brings on business trips.
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In dim sum menus chicken feet are usually written 凤爪 ('phoenix claws') - a more elegant culinary name for the exact same thing. Knowing both forms unlocks most Cantonese menus.