Beluga caviar, which up until recently was banned because it was endangered. I used to eat it on that especially rare occasion on fresh sourdough from San Francisco which was lightly coated with oil and then baked at a low temperature for just a bit. I've not had any since before the ban, but I may get some for a dinner party in the fall.
This photo is really quite perfect. It takes me back to the first time I watched James Bond, and idolized him, which is why I tried caviar originally. The nice thing is that you can have it on toast in one hand while you pat yourself on the back with the other.