Harvest peas in the morning, before the sun's heat warms them up.
Bring the harvest indoors and set a large pot of water on to boil.
Remove the stem end of peas and string, if needed.
Fill the sink with cold, cold water. Add ice if needed.
Place trimmed peas in boiling water and blanch for 1 minute.
Move pot to the sink and lift colander insert, letting water drain off.
Dump hot peas into cold water and swirl to chill faster.
Lift peas with a kitchen colander and let them drain in the second sink.
Bag peas in meal size portions, label and freeze, or spread in a single layer on a baking pan and flash freeze, then label and bag.
To cook: add butter to a hot cast iron skillet and add frozen peas. Cover and cook for 2-5 minutes or until you're happy with the texture. Salt and serve hot.