Put chai ko (Chinese: 缽仔糕 or 砵仔糕; Cantonese Yale: buht jái gōu) is a popular snack in Hong Kong.

[clarification needed] The pudding cake is palm size and is sweet in taste.

It is said to have originated in the Chinese county of Taishan, which is 140 km (87 mi) west of Hong Kong.

The pudding reached its popularity peak in the early to mid-1980s when hawkers sold it all over the streets in their push carts.

One of the dish's cultural trademarks is that it is served in a porcelain bowl or an aluminium cup.