Tsar Nicoulai Caviar has come up with an interesting idea, partnerships with star chefs on specialty flavored caviars. The first creation is Passot Roe, a collaboration with Chef Roland Passot of La Folie. The Passot Roe are trout roes infused with three different flavors, vanilla, kaffir lime and brandy. Each Passot Roe retails at $28 for 2 ounces. It's seems like a savvy move in a world where concerns about sturgeon caviar supply are creating a rapidly shifting marketplace. Humble trout caviar sounds far more exciting with a star chef and exotic flavors attached to it.