Most people haven't I guess. There was a little restaurant in Palmetto Fl, (on Tampa Bay) that served them. I think that is the only place I have ever seen them. My family loved mullet roe. I tried it once as a kid and took an instant dislike to it. I remember it being kind of gritty.All my years eating mullet as a kid, never heard of gizzards before. Did eat a ton of fried roe.