These have been available in the US for a while but they only hit the UK mainstream this year with a listing in Waitrose. The nut content makes them healthier than some snacks but they're not exactly de rigueur for the diet-conscious. It's just as well they come in small bags because they are exceptionally moreish and I'm grateful for the rationing. The only problem I have is choosing between the almond and cashew variants so, as my colleagues will confirm, I usually end up buying both.