Put a large stock pot of 4 quarts of water on to boil over high heat on the stove top.
While waiting for the water to heat, gather your other supplies. Place a large bowl in the sink with 1 Quart of water in it. Do not add the ice until just before adding peaches to the boiling water.
When water comes to a boil, reduce heat to medium so that water is at a hard simmer.
Add ice to the bowl of water in the sink.
Add your peaches to the boiling water quickly using tongs or other tool. Only add a few to the water at a time so that the water does not lose its boil
Allow the fruit to stay in the water just long enough to begin to change colors. You'll notice the color dulls.
Remove the peaches and plunge immediately into the ice water bath. Allow to soak there for 2-3 minutes.
Remove peaches from the ice water and peel the skin from the outside. You may have to use a paring knife to encourage the skin loose.
Slice the peaches in half, then in quarters and then into slices. Put into a bowl together and mix with the 2 tbs of lemon juice, mix well. Then lay out onto a baking sheet lined with parchment paper. Do not allow the pieces to touch each other. Freeze for 2-6 hours.
Once frozen, measure quantities into resealable plastic bag. Squeeze as much air as possible from the bag and seal. Label the bag and place into the freezer.