It usually needs to be soaked overnight, then added to lots of water or stock. Add loads of chopped vegetables. Anything will do, but my preference would be onion, carrots and potatoes. Simmer gently for a couple of hours (should confirm on packet how long as a minimum). Best eaten the day after cooking. My mum used to use these, I'm assuming it contains pearl barley, split peas etc. We always called it yukk! soup, but I secretly loved it.