This was our first time at YC's and the hostess was very welcoming and helpful. She walked us through the bowl sizes, the food line, and helped me make my sauce as well. There is a board of sauce recipes to follow for the ingredients but for it being our first time it was very helpful that the hostess walked us through it. Once you have your bowl ready you hand it to the cooks and they make it right in front of you. Less than a five minute process depending on how busy it is.
They also have soup and ice cream but if you need a to go box it's an extra charge. Keep them in mind when picking your bowl size.