There's comfort food, and then there's a vortex of comfort food inside more comfort food. A grilled cheese sandwich made with macaroni-and-cheese might be the very manifestation of a San Francisco foodie's id. Gooey, crunchy, and guaranteed to ruin your appetite for the remainder of the day, the sandwich has a simplicity that proves that all that umami nonsense is just a distraction from living out your inner 6-year-old's dream — and all for only $8. How has no one thought of this before? Should you chow down at the Mission location once occupied by Café Gratitude, you get to say, "I am decadent" as you stuff your face.