This Vivace "no-kill" caviar was harvested from a Siberian sturgeon via a massage-based technique. The fish didn't die. But did the taste survive? Alastair Bland for NPR hide caption itoggle caption Alastair Bland for NPR The Salt No-Kill Caviar Aims To Keep The Treat And Save The Sturgeon March 30, 2014 A method of extracting eggs from sturgeon without killing or cutting aims to revamp the industry and lower prices for this long-luxe treat. Critics say the idea is great. The taste? That's debatable.