With a full can of Guinness and most of an onion, you can make homemade cough syrup. It tastes awful, but unlike the medicinal stuff you get at the store, this stuff can actually grow on you. What you see in that jelly jar is an entire can of Guinness boiled down into a ... syrup. Don't actually boil it, let it gently boil on low-medium heat. If you boil it on high, it will overflow the pan. It works. And plus, you aren't pouring a lot of who-knows-what down your throat.