There are several videos 'out there' on the internet that only use a knife.
Ohhhh. Scary and dangerous.
But, there is an easier way.
You still need a knife or some kind of pokey thing before it is all over but it looks a whole lot safer than the 'other way'.
So, with that by way of introduction, check out this 1 min 33 seconds video of the safer way. HERE'S THE LINK
..