Spiced oca with spinach & dressed lentils

Oca, otherwise known as New Zealand yams, are tubers that look like gnarly radishes. They have a distinct lemon taste which lessens when cooked; they can also be eaten raw in salads. To prepare them, soak first to loosen the dirt. Then scrub well with a brush; there’s no need to peel.Dry them with a clean tea towel or kitchen paper before coating in the spices. They’re best with a little bite, so check them after 15 mins in the oven.