My company ordered from here for lunch. Looking at the online menu it appeared that anything fried or grilled was potentially risky, and it didn’t say whether the dum biryani was actually made with bread dough to seal the pot. I also stayed away from the bread, obviously. On the phone they claimed that none of the sauces had flour in them, as you’d expect from Indian food.
In the end I ate plain rice, raita, as well as a variety of the curries and had no reaction.
Update:
I’ve eaten from here many times, and never felt bad at all. The biryani is great, though a bit sour.
— Somewhat
— No gluten-free information on the menu
— Some
— Excellent