Some must be peeled as the outer portions are inedible, don’t taste nice, are hard to clean or cause harm, such as banana, orange, melon, pineapple, mango, avocado, onion and garlic.

For an orange, around 20% of the fruit is peel – in 2018, around 15.1 million tonnes of orange peel was generated, according to one study (that's nearly 80,000 blue whales or 2,500 giant redwoods).

Some must be peeled as the outer portions are inedible, don’t taste nice, are hard to clean or cause harm, such as banana, orange, melon, pineapple, mango, avocado, onion and garlic.