Wash cauliflower, break into flowerets. Scald, cool, peel the onions. Mix vegetables with salt. Add just enough water to cover. Let stand 18 hours. Drain. Rinse in cold water. Drain.
Dissolve sugar in vinegar. Add seeds, hot peppers. Bring to a boil. Add vegetables. Simmer 10 minutes or until barely tender. Pack vegetables in hot jars. Fill with boiling hot liquid. Seal. Makes 4 pints.