Late last month, as a definitely unique way of celebrating Hallowe'en, Bristol-based specialty ice cream-maker Charlie Harry Francis unveiled what is probably the world's first-ever glow-in-the-dark ice cream. His secret ingredient? Jellyfish protein.

The ice cream had actually been in the works for several months, ever since Francis and his team discovered that "this amazing scientist from China" had synthesized the luminescence protein from jellyfish.They ordered some, and made ice cream with it.

The protein is reportedly activated by the calcium in the ice cream, and it luminesces when agitated – this means that it glows when you lick it. Francis has tried it, and while there's no word on the flavor, he has stated that he doesn't seem to be glowing anywhere, so he assumes it's safe to eat.

What it isn't, however, is cheap. Due to the cost of the synthetic protein, he figures that each scoop of the ice cream is worth about £140 (US$225). Although he hasn't stated whether or not he plans on making it commercially, it's probably safe to assume that this is a one-off experiment.

Source: Lick Me I'm Delicious via AOL Travel