In search of chicken soup, I stopped by Usulutan today - I had never been before. I ordered the chicken soup ($8.50) which took about 15 mins to arrive at my table.
As I waited, I was served a large basket of tortilla chips and a nice, fairly mild salsa - it tasted homemade, and similar to the red sauce served on pupusas.
My soup was large, and contained a drumstick and a chicken thigh, as well as slices of carrot, chayote and zucchini. Also a few chunks of potato. On the side was some fresh salsa (onion and tomato), cilantro, rice, and two wedges of lime. I added the salsa, cilantro and lime to the soup, and meanwhile took the pieces of chicken out. I also added the rice. The broth was good - simple, and on the salty side. The vegetables were on the crisp side - the carrots and zucchini were good, but I thought the chayote tasted rather muddy, which I haven't experienced when it's been cooked longer to make it soft.
The soup was served with two freshly made, thick, corn tortillas - these were awesome. They were piping hot, and were great dipped in the soup, as well as the salsa. I could hear the sounds from the kitchen, of someone making the tortillas and pupusas (which other tables had ordered). I saw an order of cheese pupusas that looked great (I've read reports here that say they are only OK). But based on the two tortillas I had today, I will definitely go back to try the pupusas soon.
I ended up not eating any of the chicken, since the soup and chips were enough. I got it to go, and this evening made a nice chicken salad with the leftover dark meat.