Jeremiah Bullfrog ain't no Mister Softee. He ain't no Dairy Queen either. Yet his GastroPod foodmobile, a shiny silver converted '62 Airstream trailer, attracts streams of enthusiastic followers wherever it goes — as if he's the Pied Piper of foodies or something. He ain't that either, but the Miami native is a damn seriously talented chef; locals still talk about his celebrated Bullfrog Eatz in Wynwood. But now you can relish his outrageously tasty fare at single-digit prices. To wit: The "old dirty dog" — a smoked short-rib hot dog plunked into a potato bun and topped with sweet/spicy slaw — costs five bucks. The bánh mì taco — with oxtail, trotters, country pâté, and pickled radishes — is $3. A sloppy José with brisket and "curry in a hurry" (vegan curry with rice) are the high-end items at $7 and $8 apiece. Heck, the GastroPod even has an immersion circulator for sous vide cooking. The silver bullet has been known to park around Biscayne Boulevard and 18th Street, but your best bet is to tune in to Twitter to find out where this roving gourmet kitchen will strike next.