The colour of a pineapple's skin can naturally vary between summer and winter, but they are always ready to eat. So you can't easily judge a pineapple by its cover. Nor can you test it by thumping it or pulling a leaf from the crown.
Instead, check that the fruit is free from soft spots or bruises, and if it has a top, make sure the leaves are fresh and green.
As well as high levels of Vitamin C, Vitamin B6, Bromelain, Manganese and Potassium, fresh pineapples deliver a delicious taste and help support a balanced diet.