We were hungry and near the alternate location of Mijares (Washington and Allen), so we took a chance. After this second visit to Mijares, I fail to understand why people find it worth a try. There are many better Mexican restaurants in the Pasadena area - Los Tacos for soft tacos, the 2 locations of Acapulco, El Torito etc. I guess the vacuum left by Merida is being filled by El Cholo and Mijares!
The salsa we got was the special salsa made for the wait staff (our waiter explained later) so it was quite spicy with chiles and the best part of the meal. My wife had the soft tacos with carne asada - the meat was nothing special and it was unremarkable. I had the fajitas with chicken and steak - it was not properly grilled and was soupy - resulting in soggy vegetables. The accompanying condiments were OK and not memorable. Their margaritas at least had sufficient tequila to provide a nice buzz, and along with the salsa, was the best part of the meal.
There are 2 small Mexican restaurants on Foothill, a little east of Sierra Madre. I cannot remember the names. One has killer margaritas, but seems very unfriendly. It looks like it has a regular clientele who they know by name. Any one else venturing in gets perfunctory service. The other has a very dark interior and some very good food, but it has been a while since I went there, so don't remember most of the dishes. just that it was good food. Perhaps the topic of a future visit.