For breakfast yesterday I made some oatmeal with my Vanilla Silk. No discernable soy could be detected. I'm sure it helped that I was making apples & cinnamon flavored oatmeal, so there were plenty of flavors available to mask the soy taste.
Pat slipped me a glass of vanilla soymilk of a different brand. I believe he called it 8th Continent. The soy flavor of this stuff was much more subdued.
Today I had some instant grits with Vanilla Silk and they turned out just dandy.