‘We knew we hadn’t drunk anything and we thought, “It can’t be the buns,’ but it was!
‘I don’t drink, so it was just hilarious! We were rolling on the floor laughing!’
Heather shared her video as a message to fellow drivers - "Don’t overdose on hot cross buns this Easter!" - and it quickly went viral on social media, with thousands of shares and likes.
It also lead to a wave of humorous comments with one joking that it was Heather’s ‘penance for eating’ hot cross buns before Easter.
Another wrote: ‘I had a 6 pack of hot cross buns last night and woke up with the biggest hangover’. A third joked: “Just a heads up! This also happens with beer!”
But many saw the serious side with a range of experts - from police officers to bakers - giving their researched opinions.
‘As an officer, we warn all participants that food with yeast - hot cross buns, pizza, bread etc can give you a reading, but it is food-related alcohol and will be out of your system very very fast,” one wrote.
Added another: “Firstly, you still had food in your mouth when you conducted the test,” the man wrote.
"Secondly, baked hot cross buns have yeast in them and alcohol has yeast in it - hence why you got the reading you did.
“Thirdly, to get a proper reading you can not eat or drink for 15 mins prior to doing the test to PREVENT FALSE READINGS.”
Others went on to say that alcohol and yeast in foods leaves the body quickly, and that bananas and jam, can also cause a similar reaction - despite not containing any alcohol.
‘It’s recording a higher blood alcohol in her system because she just ate it,’ says another officer. ‘It’s why we ask if you’ve had anything to eat or drink in the last 15-30 minutes prior to testing. Once she got back for another test at the station, the hot cross bun wouldn’t have registered in her blood - I’m sure of it.’