Walnut and Buckwheat Croquettes

As buckwheat is such a lightweight cereal, these croquettes are particularly good. If, in the past, you have found nut mixtures stodgy, try these and surprise yourself. This recipe makes five handsome-size croquettes, enough to feed 4 people as a light lunch. Double the amounts if more are needed. Serve with tomato and malt whisky sauce, or salsa romesco.