Why don't you go to your local craft shops or look up a pottery in your area. I can 'almost' guarantee that any potter in Canada whether they use their own made glazes or bought ones will be food safe.
They would be more than happy to sell you a pottery you can cook in. Stoneware which won't even need a glaze and becomes seasoned as you use it... the best!!!
(so said by an x-Canadian-potter)
Meddle not in the affairs of dragons for you are crunchy and taste good with ketchup.