Carne Asada Tacos

These are one of my specialties, under consideration for the "best of" cookbook. The recipe comes from a Jeffrey Steingarten book, "It Must've Been Something I Ate." In this article, he is fanatically trying to impersonate the little old Mexican lady who makes these. It's grilled marinated skirt steak (or broiled in my yardless apartment), and three simple sauces, including a spicy thin and smoky chipotle salsa, a chunky salsa ranchera, and lots of guacamole. The best part is that the flour tortillas are made from scratch and the are nothing like the supermarket kind. It's due to a secret ingredient...