Once the fresh pineapple is cut from the plant, it will not ripen any further, so forget about letting it ripen on the counter. Storing at room temperature will increase the acidity level of the pineapple, but will not improve sweetness. Fresh ripe pineapples should have green, fresh looking leaves in a small, compact crown. The fruit should be plump, feel heavy and have a strong sweet, but not fermented, pineapple aroma. Coloring may be green or yellow-gold, depending on the variety. A ready-to-eat pineapple should yield to medium pressure, have no indication of mold, and the eyes should be bright, shiny and flat. Pineapples have exceptional juiciness and a vibrant tropical flavor that balances the tastes of sweet and tart. They are second only to bananas as America's favorite tropical fruit. The area closer to the base of the fruit has more sugar content and therefore a sweeter taste and more tender texture.