For anyone who likes boiled peanuts and have never used a pressure cooker to make them. I have been doing it like this for about 6 years and there are some tricks. I cook them for 25 minutes under pressure then let them cool in the salted water. If you don't let them cool in the water they tend to shrivel up and the salt doesen't get into them.
For those not familiar with regular boiling it takes about 2-4 hours depending on the size of the batch.