I have eaten here a few times. We always get there right before 5:00 when the prices change from lunch to dinner.
They do offer menu items, and then have a bar of veggies and meats and sauces at the end. They have instructions on how you can create certain sauces.
I have found it a little loud at times, and not very much for children to eat there. For that reason we do not frequent there much now.