I had some London broil left over from the Mediterranean salad I made the other day, and decided tacos would be a great way to use it on a warm spring day here in Oregon (a pretty rare occurrence).​  I found this recipe in my email from PureWow, and decided that with some simple modifications it would work well.  The only change I made was due to my meat already being cooked medium rare last night when I started.  I sliced it up, tossed it in the rub seasoning from the recipe, and heated it through in the cast iron skillet, making prep time much shorter.