The other night, my friend Yin took me out for dinner at a secret taco stand.

It only exists on Friday and Saturday nights, and the food is served out of a small window, wedged between Pizzeria Delfina and Tartine.

If you walked by and didn’t know to look for it, you might not even notice that it was there.

Each night, they offer only one meat (this time, it was carne asada), and two choices for eating it: Primo, or Regular. The Primo is the meat of the day mixed with beans, cheese, guacamole, onions, and cilantro, wrapped in a flour tortilla. The Regular is served with no beans nor cheese, and the tortilla is corn instead of flour.

I am vegetarian, and they were happy to accommodate. I ordered a Primo and a Regular.

Both tacos were delicious. The guacamole was refreshing, the spices were on point, and the juices ran down my wrist. My favorite part, however, was the corn tortilla on the Regular. It was moist – almost tender – and the corn flavor sang through. Perhaps it should come as no surprise, given that it was made by hand only moments before.

It also didn’t hurt that my favorite ice cream in the city – Bi-Rite‘s soft serve – was located across the street.

On one of the rare warm evenings in San Francisco, tacos and ice cream are hard to beat. Especially when enjoyed with this view: