Though several tables have been added since we last wrote about this obscure gem at a Diamond Shamrock station (there’s no sign outside to advertise the unbelievably good ’cue within), it’s still hard to snag a seat at Casstevens. The reason? Mesquite-smoked meats, including thick hunks of brisket that are generously rubbed with garlic, salt, and pepper before they’re left to blacken in the two huge pits for fifteen hours.