Slow cooking recipes: tagine of lamb shank, and Italian-style braised oxtail
Susan Jung shows how long, slow cooking allows tough meat like shanks to mellow into dishes that are delicious and rich

To many cooks, extremities, such as tails, feet and shanks, represent an opportunity. They are often extremely tough cuts of meat but they can be transformed into delicious dishes through long, slow cooking. The soft, sticky texture of the meat comes from the collagen in the tendon, which enriches sauces.
Tagine of lamb shank, green olive and preserved lemon (pictured)
Make the preserved lemon at least two weeks in advance, so it has time to ripen. Use organic lemons because they aren't coated with wax. Alternatively, preserved lemon is sold at some supermarkets.
This recipe is based on one in the book Couscous and Other Good Food from Morocco, by Paula Wolfert. If you don't have a tagine, use another heavy pan with a tight-fitting lid.
For the preserved lemons:
5-6 organic lemons
About 80 grams kosher salt or coarse sea salt For the tagine: