How To Prolong The Shelf Life Of A Tomato?
To test this theory, we placed one batch of tomatoes stem-end up and another stem-end down and stored them at room temperature.
A week later, nearly all the stem-down tomatoes remained in perfect condition, while the stem-up tomatoes had shriveled and started to mold.
We surmised that the scar left on the tomato skin where the stem once grew provides both an escape for moisture and an entry point for mold and bacteria. Placing a tomato stem-end down blocks air from entering and moisture from exiting the scar.
The taped, stem-end-up tomatoes survived just as well as the stem-end-down batch.