Authentic (?) Taco

When it's hot, I often feel like eating exotic and hot food. It was the case a couple of weeks ago, when we went to a country show. There were different stands offering different cuisines, we went to the Mexican food van and I bought this taco. I don't know how authentic it was, but this was the best taco I ever had. Not the Old El Paso pseudo-Mexican stuff. This was fresh, the tortilla was soft, there was plenty of sauce (sour cream? I cannot remember) and the jalapeno brought all the spice and kick needed. Moral of the story: the best food experiences come in the most unexpected places.