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Tuna bun, Tuna fish bun (Chinese: 吞拿魚包; Jyutping: tan1 naa4 jyu4 baau1) is a Hong Kong-style fish bun. It is a bun that contains tuna paste. It is commonly found in Hong Kong.
Due to the high price of a whole tuna, almost all bakeries in Hong Kong use canned tuna to make tuna buns.