How do you tell when a grapefruit is ripe?

* Color: Ripe grapefruits are usually a deep, golden yellow color.

* Smell: Ripe grapefruits have a sweet, citrusy smell.

* Touch: Ripe grapefruits should be slightly soft to the touch, but not mushy.

* Weight: Ripe grapefruits should feel heavy for their size.

* Stem: The stem of a ripe grapefruit should be green and fresh-looking.

If you're not sure if a grapefruit is ripe, it's best to err on the side of caution and wait a few more days. Grapefruits that are not fully ripe will continue to ripen at room temperature.