So, what's your relationship with Marmite like? Are you a lover or a hater?
One thing's for certain - everyone has a firm opinion. And now, the reason for our strong opinions could have been discovered.
Marmite has worked with DNAFit, the UK's leading genetic testing centre, to carry out a clinical trial which determines whether or not there is a biological link to our taste preference.
'The Marmite Gene Project' has scientifically shown that we are born genetically likely to be a lover or a hater of Marmite, and there is a genetic foundation to our taste preference.
Over 260 adults participated in the study - they were asked to taste a 2g serving on their tongue for 10 seconds, and then filled out a questionnaire to identify their assumed 'love or hate' Marmite taste preference, and their reaction upon trying it.
Saliva cheek swabs were then taken from each participant to obtain DNA samples - these were then sent for analysis to identify SNPs (single-nucleotide polymorphisms) which are associated with the Marmite taste preference.
Thomas Roos, the Principal Investigator of The Marmite Gene Project at DNAFit, said: "Our research indicates that Marmite taste preference can in large parts be attributed to our genetic blueprint, which shows that each of us is born with a tendency to be either a ‘lover’ or a ‘hater’. Our data reveals that there are multiple genes that contribute towards this, and it is a really exciting discovery."
However, Roos has said there is hope for Marmite lovers who want to convert their friends and families.
"Like anything in genetics, taste preference is dictated by both nature and nurture. Our environment can impact our taste preference as much as the genes we are born with."
You can buy a Gene Test Kit for yourself to see whether you're a Marmite lover or hater - you can find out more here.