You don’t want me to go there, do you?
Radishes. Radishes were regarded a delicacy in biblical times. They were quite tough to get by. Fresh fruits were available on a regular basis, among other pleasures. Strawberries and bananas were formerly considered luxuries. Cacao was once worth as much as gold in France.
Rabbi Judah the Prince, according to the Talmud, was considered extraordinarily wealthy because he got fresh vegetables every day, including radishes.
Peacocks, swans, and games (deer, boar, etc) Of fact, not just the caviar, but the entire sturgeon was a royal prerogative as well.