Note Pickled sliced Spanish onions are an Italian antipasto of sliced Spanish onion pickled in white wine vinegar. Available from Fratelli Fresh and continental delicatessens. Fig vincotto is made by reducing grape must until syrupy and ageing with figs and a vinegar mother for four years in oak barrels. Available from Kirk Food Associates. Valley Produce Company amber walnuts are walnut halves coated in caramelised sugar and soy sauce. Available from David Jones Food Halls and delicatessens.