I hear people pronounce the name of my favorite cheese substitute in two very different ways. Some say Day-uh, and some say Die-uh. It's been bugging me so I broke down and found out on-line the answer to this question that's been bugging me for years. On Daiya's facebook page they say that it is pronounced "Day-uh" as in "Have a nice Daiy-a". So, there you have it!
And if you haven't tried this stuff, I can't describe what a life saver it is for those of us that miss cheese like nobody's business!