Caviar has a reputation for being hoity-toity. But fish eggs weren't always a delicacy, and there's nothing inherently unapproachable about them. In fact, they used to be an everyday snack.
At the turn of the 20th century, the Hudson and the Delaware were two of the biggest caviar-producing rivers in the world. Overfishing eventually caused domestic suppliers to run dry, tipping the balance in favor of importers across the Atlantic, which is why it got more expensive.