In the capital, there were several food stalls selling everything from ordinary food to insects on skewers. Over time, these foods became commonplace, and gradually the strangeness wore off and exotic foods became commonplace.
Darius wanted to introduce a common food from his old world, but in this one, it would be considered very different. Fast food didn't exist, although it was possible to walk down the street and buy something to eat and walk around while eating, the food was still relatively healthy. They weren't greasy and they were made in such a way that if you ate them every day you could become obese and have diseases.
He was expecting resistance, but was slightly reassured that if it went wrong, all his family would have to do was eat the food little by little and their money wouldn't have been wasted.