Today we went out for dinner at Zaffran. Since the...

Today we went out for dinner at Zaffran. Since they apparently had vegan options among their vegetarian ones, we considered the place vegan friendly.
When we got there we saw multiple vegan options for entrees and side dishes.
But the only dairy free main dish was a salad, and, as health conscious as vegans are and as crazy as it sounds, we still enjoy warm, cooked food once in a while, especially when it's cold outside. So we asked whether their yellow lentil dal could be made without dairy or animal products and the waiter said there was no problem. I repeated multiple times, just to make sure, that we wanted a vegan meal, not a vegetarian one, and that it meant zero dairy products.
Once the main dish arrived, I felt the taste of dairy in the dal. So I asked the waiter if he was certain that no dairy, no ghee or whatsoever was used. I asked if he could check. He said it was fine.
But it wasn't. You see, me and my mother, who both ordered the same dal, are HIGHLY intolerant to dairy. As soon as we finished the dish, we both had the most painful, horrific, traumatic digestive episodes we've had in a very, very long time. I'll spare you the details. We've both made the decision that from now on we won't eat on any restaurants anymore unless they are fully vegan. Thank you Zaffran for the lovely experience.