Ask for paper-thin slices of meat at the deli counter. To ease prep, look for a package of presliced mango in the produce section. We do not recommend jarred mango slices—they're too soft.
Yes, you can always use instant. But food editor Margo True swears by steel-cut: "I love it because it has a chewier texture than instant or ordinary rolled oats and a deep, nutty flavor." It also freezes well (add the fruit after defrosting), so make a big batch on the weekend.
Mexican food was never a regular part of my life until Ben also became a regular. See, my family's choice restaurant and food was Italian as I was growing up.