Subscribers can access a story about CocktailSafe in the Globe and Mail (the story is paywalled). 

The article covers things like tobacco and activated charcoal with quotes from Trevor Kallies and Darcy O’Neil, and also some information about homemade ingredients in different parts of Canada: 

Some cocktail experimentation doesn’t fall under any regulatory regime. Canadian bartenders say provincial liquor inspectors and local restaurant health authorities rarely inquire into cocktail techniques and ingredients. In some jurisdictions, including Ontario, Saskatchewan and British Columbia, infusions are permitted, within certain guidelines (for example, B.C. advises licensees that the infusion ingredients should be “spices, herbs, fruits, vegetables, candy or other substances intended for human consumption”). In Alberta, however, regulations specifically forbid “adulterating” liquor in this way, and that’s a sore point among some bartenders there.

You can read the whole story (if you're a subscriber) here.