Garbanzo & Spring Greens Soup

Garbanzos - as the Spanish call chickpeas - are greatly loved in that country, but not much eaten here. Most familiar here in hummus, the tahina-flavoured puree that has given supermarkets one of their most profitable ready-made offerings, whole chickpeas have failed to make the necessary leap into our collective food conscious to become other than an oddity on the domestic table. This is a pity, because they are cheap and have much to offer the cook, with their distinctly nutty taste and t