But it says kohlrabi is "a versatile veg" that can be eaten raw in coleslaw in summer and roasted or boiled in winter dishes.
It can even be used to replace potatoes in a gratin dauphinois.
The vegetables are available in white and red varieties described as "sweeter in flavour and less woody in texture, reflecting the British palate".
They have been grown for Waitrose in Lincolnshire's "brassica belt", the supermarket confirmed. They will sell for £1.20 each from this month.
The retailer has also begun stocking other lesser-known Continental produce including patty pans (also known as custard squashes) and romano beans.