THE 5 BEST TORTILLERÍAS DOWNTOWN AND ON THE SOUTH SIDE.

For this round, the hunt for delicious tortillas heads to downtown, S. Side

In this sprawling city of tacos, enchiladas and just about anything else you can stuff inside a round of masa or flour, finding truly noteworthy tortillas — the kind made fresh each day in the scores of tortillerías scattered across the area — can be challenging.

This week brings the third installment in our grand tour of tortillerías in San Antonio with a focus on downtown and the South Side. With each of these adventures, we’ve sampled near countless tortillas in just about every shape and size to find the best to recommend. Our list of the overall best tortillas in San Antonio from this series will run on ExpressNews.com May 5 and in the Taste section May 9, so stay tuned.

Los Hermanos Tortillería: Situated in an impossible-to-miss bright yellow building about a block west of Interstate 35, this business has been serving San Antonio’s tortilla needs since 1981.

Corn tortillas are the specialty here. Made fresh daily from nixtamalized kernels ground in-house, these shaggy, rugged rounds that look as homemade as they taste have a potent aroma that greets you at the door. Once heated, they’re satisfyingly dense without feeling heavy and have a satisfying chew.

The flour tortillas are so slouches, either. They’re saltier than average and have a creamy fattiness. When heated, they puff up into tender, almost flaky layers.

303 Commercial Ave., 210-922-0219, Facebook: Tortilleria Los Hermanos

Sanitary Tortilla Co.: One of San Antonio’s oldest tortillerías, this beloved downtown institution has nearly 100 years of history. It prides itself on freshly nixtamalized corn ground daily starting around 4 a.m.

That ground corn is transformed into something rare: corn tortillas in two thicknesses. Sanitary produces a thin corn tortilla perfect for doubling up as a taco and a thicker version ideal for accompanying your favorite plate of Mexican food. They taste and smell the same, with a remarkable sweetness from the corn accented with the lightest touch of salt.

You’ll also find one of San Antonio’s best whole wheat flour tortillas here. They’re thinly pressed, smell quite nutty and have a beautiful, tender texture more akin to a white flour tortilla than the typical coarseness found in whole wheat. The white flour tortillas are also a hit, thanks to a generous dose

Paul Stephen / Staff Sanitary Tortilla Co.’s nearly 100 years of experience results in great corn tortillas in two thicknesses and superb whole wheat tortillas.