Listen 7 min Share Comment on this story Comment Most days, you’ll find Gui Gonzalez on the back end of his Fire Pit Brazilian Barbecue truck, standing over a grill loaded with St.... Just look for the smoke billowing around Rockville Pike and First Street.... Or better yet, stick your nose in the air and take a deep breath: You might get a whiff of the eucalyptus lump charcoal that the gaucho burns, its aromas clean, cool and coniferous. Never ask what’s for dinner again....