Victoria Hiley, 35, a mother of one from Leeds in northern England, has already donated a liter of her breast milk to Icecreamists parlour for the dish it calls Baby Gaga, UK website Parentdish reported.
"What's the harm in using my assets for a bit of extra cash?" said Hiley, who responded to an advert for milk suppliers on another parenting website, Mumsnet. "What could be more natural than fresh, free-range mother's milk in an ice cream?"
The new parlour, based in London's trendy Covent Garden district, pays £15 ($24) for every 10 ounces of milk and has already had 15 mothers become donors. Each lactating woman undergoes the same health checks used by the UK's National Health Service to screen blood donors.
Matt O'Connor, 44, who runs Icecreamists, makes the dish by blending the breast milk with Madagascan vanilla pods and lemon zest.
"No-one's done anything interesting with ice cream in the last hundred years," he said. "Some people will hear about it and go, 'yuck,' but actually it's pure, organic, free-range and totally natural."