You can make creme brulee or pizza on the street corner and call it street food. But while it might be tasty, it’s still not street food — it’s just kitchen food made in an uncomfortable outdoor setting.
On the other hand, a cart filled with chicharrónes in plastic bags, with various flavorings? Now THAT is street food. It’s authentic, it’s cheap, and it’s good. But it’s not gourmet restaurant food, and it doesn’t pretend to be.
This food cart would have fit right in down in Mexico City. It makes one realize what a shame it is that we don’t have folks selling homemade sorbet on street corners here in SF.