Shell and wash peas.
Hot pack: cover with boiling water, bring to a boil, and boil 2 minutes. Raw pack: fill with raw peas without shaking or pressing down.
Add boiling water, leaving 1-inch headspace; add optional salt.
Pressure process pints or quarts 40 minutes.
Dial 11/12/13/14 psi by altitude; weighted 10 psi through 1,000 ft, 15 psi above.