Squeezed between a manicurist and jewelry store on Bromfield Street in Downtown Crossing, Tequila Mexican Grill’s nondescript storefront is easily overlooked by harried office workers on their way to power lunches at Silvertone. Those in the know, however, know that the Grill is worth the stop.

Though the Grill is small (seating 15 or so), its menu is not, and it dishes up large portions that resist the urge to become gloppy taco salad after a couple of minutes. The shell in the chicken quesadilla ($4.95) and "Combo #2" with chicken flautas ($8.95) is crispy and non-oily, though the chicken, marinated in basic chicken stock, is a bit bland in both. Our resident vegetarian had better luck with the vegetable taco salad ($5.95). The more he chomped, the more he found to like: forkfuls of fresh mushrooms and broccoli, crunchy carrots, lettuce, beans, zucchini, even stewed potatoes, all piled into a crispy shell that remains firm until the end of the meal. Not to be outdone by Mexican-food carts in the area, the Grill’s vaquero burrito ($5.95) is suitably huge, packed with carrots, broccoli, mushrooms, rice, lettuce, tomato, sour cream, and grilled lemon chicken. Mole sauce lends the steak enchiladas ($8.95) a nice bite, and Jarritos Mandarina soda ($1.25), imported from Mexico, keeps it under control. Mindful of its Boston environs, the Grill also has a sandwich menu with grilled-steak and chicken-cutlet offerings ($4.95–$5.95) to assuage lunching gringos who feel out of their depth.

The ambiance? Let’s be diplomatic and call the décor "minimalist" — a few decorative sombreros hang on the walls — but give the food a grande. If you want a no-frills downtown Mexican-dining experience that’s more Southwestern taco stand than Chili’s, then Tequila Grill’s for you.

Tequila Mexican Grill, located at 55 Bromfield Street, in Boston, is open Monday through Friday, from 8 a.m. to 4 p.m. Call (617) 482-8822.