Q&A for How to Ripen an Unripe Pineapple

The bottom will smell like a pineapple. If it doesn't smell like anything, it isn't ripe.

When my pineapples go bad on the bottom, I usually cut off that piece and see if the rest is good enough to eat. If it is, eat it right away; if you don't, the rest of it will go bad very quickly.

You can try placing it in an open container that won't leak juice (like a plastic container) and putting it in a paper bag in the fridge with an apple. This should help it ripen faster. You could also try grilling it.

No, it won't.

Once the pineapple has been picked, it doesn't ripen anymore. You can make it softer but it won't get sweeter. They say to put it upside down to keep it from going bad while it softens some.

It is over ripe. Cut and eat it ASAP. Put any uneaten pieces into a bowl with a little water to eat at a later time.

A whole pineapple will keep for 4-5 days in the refrigerator. If it has been cut, It will last 3-4 days in the refrigerator.

Pineapples stop ripening naturally as soon as they're cut from the plant. They will not technically get any sweeter or riper from that moment on. There are ways to develop the flavour, texture, and colour of pineapple after it is cut from the plant though - as explained in the article.

Don't eat it - it is starting to spoil and the mold spores will have deep roots through soft flesh. And the fruit won't taste musty but bad. Especially if the bottom smells bad, don't eat it.