Go to bakery. Buy sourdough.
Done ✅
Discussion
Sourdough is illegal in Canada
You, my friend, are killing it lately. 👏 bravo. 👏 
Wait! Is this true?????
My mind read “California” and nodded that it made perfect sense.
Same thing essentially
What?? No it isn't? Like to sell at stores?
Oooooh. Someone just finding out about Canada. 👆
Spicy. 
I live in Canada and sourdough isn't illegal. Here's a bakery in Ottawa that sells sourdough bread: https://www.breadbyus.com/
Very Canadian of you, living in our capital?
I hear everyone's is deaf in Ottawa, because of the truckers' honks. It's why the politicians don't listen to the people.
Your countrymen are the ones sharing the info.
I’m just a middleman here. A referee per se. Like hockey. You get it.
I’ll let you ladies fight it out.