Spinach Soup with Chilli Gnocchi

Gnocchi can be light and, when spiced with hot chilli and fresh coriander, make a very Mediterranean addition to this deeply green fresh - yet satisfying - soup.

There is a view that if you include eggs in gnocchi they will go rubbery. However, the addition of just one size-3 egg does nothing but lighten the dumplings a fraction and ensures that the potato-and-flour base does not sog into the cooking water.

This is a recipe in which frozen spinach works if fresh is unobtaina