Decrypt hidden message and find solution

A tour bus driver is driving with a bus full of old aged pensioners when he is tapped on his shoulder by a little old lady.
She offers him a handful of peanuts, which he gratefully munches up.
After about 15 minutes, she taps him on the shoulder again and she hands the driver another handful of peanuts.
When she is about to hand him another batch again, he asks her "Why don't you eat the peanuts?"
"We can't chew them because we have no teeth", she replied.
"We just love the chocolate around them."