Complex sentence: Fruit maturity is not always apparent from the outside as the fruits remain green until they are over-mature or rotting, however one can usually sense ripeness by giving the fruit a soft squeeze, a ripe Feijoa will give somewhat like a just ripe banana.
Split into simpler sentences: Fruit maturity is not always apparent from the outside as the fruits remain green until they are over-mature or rotting. However, one can usually sense ripeness by giving the fruit a soft squeeze; a ripe Feijoa will give somewhat like a just ripe banana.