To make up for the absence of recipes this last month, here is a citrussy pair suited to the season, complete with nerdy citrussy facts.  I think preserving oranges and lemons is fun.  You might not, of course.  (The lemons are for Anthea, who assures me she's interested.)

It's really easy to preserve your own lemons, and once you have a jar of them you'll find yourself adding them to tagines (eg chicken with lemon and olives), salsas (with shallots and fresh herbs, to go on grilled fish or meat), salads and couscous dishes...