Rocket was a popular salad ingredient in Britain in the sixteenth century, then it disappeared from public awareness in this country until just a few years ago, when it was rediscovered with its more exotic Italian names – also used in the USA – rucola and arugula.
Melt the butter in a heavy saucepan over a moderate heat and sweat the potatoes, leek and onion for 2–3 minutes, stirring constantly with a wooden spoon and taking care not to brown the vegetables.
Barely cover with about
Purée in a blender or food processor and return to the pan. You can hold at this point for several hours before reheating gently until hot. If the soup is too thick at this point, thin it with a lithe milk until you have the consistency of single cream.
Just before serving, stir in the chopped rocket leaves. Remove from the heat, taste, adjust for seasoning and serve at once.
© 1998 Alastair Little and Richard Whittington estate. All rights reserved.