A common variant in the United Kingdom, Australia and Ireland is sesame prawn toast.

This involves sprinkling sesame seeds before the baking or deep frying process.

The dish originates from Hong Kong, as an early form of fusion cuisine, combining prawn paste, which is very common in Hong Kong cuisine, and toast, originating from the West.

The dish is called haa dō si 蝦多士 in Cantonese, haa, meaning prawn, and dō si, a loan word from English meaning toast.

[1] The dish's range expanded along with trading routes, making its way to Japan and Southeast Asia countries like Vietnam and Thailand.