Thanks for all the helpful replies to my question of Nopalitos. Here is the recipe that raised the question - hopefully in a couple of weeks time, I shall be able to try it out for myself; CARNE de RES CON NOPALITOS 3lb/1.3 kg beef, cut in 2inch (5cm) cubes 4 tbsp/60ml olive oil or lard 1 large onion - finely chopped 2-4 cloves garlic - finely chopped 1 can or bottle nopalitos 10oz/300g can tomatillos 6 canned or 3 fresh serrano chiles - chopped 4 tbsp/60ml tomato puree (paste) 8fl oz/225ml/1 cup beef stock (boullion) one handful fresh coriander (cilantro) - chopped salt & pepper Fry the beef in the lard or oil, a few cubes at a time, until well browned. Transfer to a flame proof casserole (or Dutch oven). In the same fat, fry the onion & garlic until golden. Add to the beef. Drain the Nopalitos, & rinse thoroughly. Add to the beef, onions & garlic with the other ingredients (don't drain the tomatillos). Bring to the boil & simmer gently until the beef is very tender - 2 & 1/2 to 3 hours. (From The Complete Hot & Spicy Cook Book edited by Emma Callery, Quintet Books UK)