Bring water to boil then turn off the heat.
Fill a bowl with ice cold water and set aside.
Gently place your peach, or tomato in the pot and leave it in the boiling water for 10-20 seconds.
Get the peach or tomato out of the water with a slotted spoon and place it in the ice cold water.
The goal is not to cook the fruit but to loosen the skin from the flesh.
As soon as the fruit is cool enough to handle the skin should peel off with gentle pressure from your fingers no need for knife.