How to ripen avocados in 10 minutes

Avocado imports globally hit £3.83bn in 2016, with imports growing by 21 percent between 2012 and 2016. In 2017, a plastic surgeon in London coined the term “avocado hand” to describe the increasingly common injury of someone who had cut themselves slicing avocados. But avocados are best when eaten at the perfect ripeness, so how can you ripen an avocado in just 10 minutes?