Morton Salt is Windsor Salt in Canada by: SmokerBill
I had to do some research to find a Morton Tender Quick source for you up there in the north country. I discovered that what's known as Morton salt here in the states goes by the name Windsor salt in Canada.
I'm not sure if Windsor salt sells Tender Quick under the Windsor name, but you'll be able to find out by contacting Windsor. This is the phone number you can call to place an order: (630) 343-0240
