You’ve probably heard about smashed burgers. They swept the globe a few years as keen barbecuers started pressing their beef patties firmly down against a hot flat top grill or pan, to make sizzling squashed burgers with delectably crunchy crusts and a high ratio of crisp to juice. So popular have they become that people are starting to experiment with them even more. I heard you can make them with tortillas instead of a burger bun, for Smashed Burger Tacos. And of course, I had to give the...