Definition of ready-salted in English:

ready-salted

adjective

British
  • Designating any of various foodstuffs, especially potato crisps, that have been seasoned with salt before sale.

    Prior to the introduction of ready-salted potato crisps, bags of unflavoured crisps were sold with a sachet of salt, to be added by the consumer.

Origin

1960s; earliest use found in The Times.