Kyle Gentleman, 28, mixes his homemade vanilla pud with three drops of legal CBD liquid.
He serves up his creation for £2.50 a time — beating the US giant which revealed similar plans this month.
The dad, of Falkirk, said: “Word spread quickly and it ran out fast. It has an earthy taste, but I like it.
“I know Ben and Jerry’s are trying to do this but I managed to beat them as my shop is much smaller.”
Kyle said he came up with the idea for the dessert — thought to be the UK’s first — at his ICE cafes in Falkirk and Larbert after hearing claims that the oil eases depression, insomnia and epilepsy.