Mix the corn meal with the hot water until crumbly. Add the remaining dry ingredients, and stir to combine. Mix the soymilk with the lemon juice and pour it into the dry ingredients. Mix well, and set aside while you heat your skillet.
If necessary, spray a non-stick or cast iron skillet with a little canola oil (if your skillet is truly non-stick, you may be able to skip this step). Get it hot, and then cook the corn cakes like pancakes, allowing about 1/4 cup batter per corn cake. Cook until well-browned on each side. Makes about 8-10.