What do you usually eat on the day of an interview, before it starts?

During my first switch, I used to be nervous and it wouldn't let me eat anything until the interview is over. Now I have aced the interview part (irrespective of the result). I'm no more nervous, just get on the call, speak my mind, just like a regular meeting.

I'd really recommend attending as many interviews as possible, so you'll eventually treat it just like any other call ( but with strangers who judge).