I like serving this frittata as a family-style brunch for friends and family. It’s a really nice dish to gather around the table for. And it’s very comforting. I use osetra caviar here, as opposed to beluga, because it’s less salty and has better flavor and more bite. These days, caviar comes from everywhere — the Columbia River, Italy, Bulgaria, and caviar farms all over the world — but the original caviar came from the Caspian Sea. If you aren’t sure which caviar to buy, simply ask someon