OralChroma's machine scientifically determines who has the stinkiest garlic breath.

Contestants are encouraged to cheat by eating lots of delicious garlicky food before entering the Garlic Breath Contest. Check out our garlic recipes section for inspiration. Started in 2012 and the first garlic festival in the world to use a gas chromatograph to measure garlic breath, festival officials use a gas chromatograph generously provided by Oral Chroma. Contestants’ breath is measured in the parts-per-billion of three crucial garlic elements — Hydrogen Sulphide (H2S), Methanethiol, and Dimethyl Sulphide.  Prizes are awarded to the contestants with the highest reading of H2S (that is, with the strongest garlic breath).

2017 Garlic Breath Winner

Helen A.  Reading of 288 parts per billion of Hydrogen Sulphide.

Helen wins two tickets to see An Evening with David Sedaris at Sony Centre for the Performing Arts; A signed copy of Ontario Garlic: The Story from Farm to Festival, by Peter McClusky; a bakers dozen of Ontario garlic bulbs; and an Official Festival Souvenir Apron.

2016 Garlic Breath Contest Winner

Alison Foo. Reading of 457 ppb.



Choose Activity or Speaker

360° Virtual Farm Tour (all day)
Festival Theatre: Garlic Is As Good As Ten Mothers by filmmaker Les Blank
Free Garlic Shot Station
Free Posture Assessment by Rosedale Wellness Centre (All Day Booth 58)
Garlic Breath Contest
Music Stage 2018
Speaker's Corner: Garlic Art Workshop 2018
Speakers’ Corner 2018