Choosing a really ripe and sweet pineapple requires certain knowledge and skills. The typical way of choosing pineapple is through observation, as in smell and appearance of the pineapple.
Pineapple
It should have fresh green leaves and look plump at the bottom. It’s best to avoid bruised pineapples. Besides that, the smell should be sweet at the stem. There shouldn’t be any soft spot when you touch the pineapple, but slight suppleness which will not enable your thumb to puncture the skin.
The tips given above are purely orthodox. And so, let’s look at the alternative, or perhaps the more feasible, option in bag for us.
Hearing is the key here. This is a technique which my neighbour taught my dad and it works perfectly for the time being. As a result, all I got on my dining table are sweet, tasty pineapples.
So, the question is how?
Well… It’s simple, really. You flick your fingers against any concrete cement wall and listen to the sound. There will be a solid “thud” sound. Remember this sound… This will be your sound sample. The next time when you wish to buy a pineapple from the vendor, flick your fingers against it. If it produces sound other than what you heard from the wall, leave it. Don’t stop choosing and picking until you get a pineapple which gives you the sound that resembles the one from your sample.
Initially, there’ll be trials-and-errors, but practice makes perfect. You will soon get a hang of it. 
Anyway, this technique works almost all the time for me and I didn’t really practise much on the cement wall sound sampling.
There’s, however, one site which has a different view about this technique.
“There is no truth to the rumor that you can thump a pineapple to tell if it is ripe, though this does work for melons.”
Well, it’s up to you to try. I am just sharing my knowledge and personal experience on choosing the correct pineapples with fellow readers. Any feedback is very much appreciated.
Posted by skynode 
