Source of Mustard Seeds
Looking to buy different mustard seed in GTA for making mustard at home
The bulk barn has yellow and brown mustard seeds, but a trip to an Indian store will uncover spicier black mustard seeds, in addition to yellow and possibly brown as well.
There is also a new place called The Spice Trader on Queen West West. The variety of spices, herbs, melange, vinegars and oils is astounding. Sometimes they have mix'n'match sales, which is helpful if you are needing the more expensive spices. My ras al hanout was $8 a tin.
805 Queen St W, Toronto, ON M6J, CA