Themes
Failure is the condiment that gives success its flavor.
— Truman Capote

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Failure is compared with seasoning rather than with the whole meal. Its value lies in changing how success is experienced, giving an achievement depth or contrast it might otherwise lack. The metaphor makes disappointment part of the eventual taste without pretending it is the main reward.
Context reviewed