Choose compact white heads.
1. Trim off leaves and cut head into pieces about 1 inch across.
2. If necessary to remove insects, soak for 30 minutes in solution of salt and water (4 teaspoons salt per gallon water).
Water blanching: Water blanch for 3 minutes in water containing 4 teaspoons salt per gallon water. Cool promptly, drain and package, leaving no headspace. Seal and freeze.