Costa Coffee Coolers, Costas answer to the Frappuccino. Now I prefer the Starbucks version because when I order this at Costa they put coffee grinds in it. Why? No, really why? It just meant there were lots of bitter lumps in my drink, not yummy. I've had a couple since and they haven't always had these grinds in, but I still don't trust them.
The magical new take on coffee art, rainbow coffee, was pioneered by Mason Salisbury (aka @ibrewcoffee on Instagram), a barista at Las Vegas coffee shop Sambalatte. And now the UK is set to taste the caffeine rainbow – thanks to Costa. We set out to find out how to make it.