historians have discovered a 1,900-year-old hangover cure written on an ancient egyptian papyrus .
this papyrus was found in oxyrhynchus , egypt , and contains a medical ` recipe ' for treating a hangover .
the treatment was discovered as part of an ongoing effort to translate the oxyrhynchus papyrus - more than 500,000 documents found in an ancient rubbish tip at the egyptian town of oxyrhynchus .