CT has been interested in The Lost Crops of the Incas for a very long time. One he’s been growing over the years is oca (Oxalis tuberosa). I was recently gifted a kilo of beautifully coloured oca tubers from The Guild of Oca Breeders. This was a rare treat as I hardly ever get to try any of CT’s precious tubers. You can prepare them in pretty much anyway you’d cook a potato, but I like them best roasted. Here I give you my recipe for a quick and simple dish of chilli roasted oca with hedgerow pesto.