In a small bowl, mix the lactic acid, white wine vinegar, apple cider vinegar, and maple syrup, and then add in the soymilk all at once. Set aside to curdle.
Add 1 1/4 cups water, cornmeal, raw cashews, and golden flaxseeds to a small saucepan.
Bring to a low simmer and cook 5 minutes, until the cornmeal is just soft. Turn off the heat and let it cool down for a few minutes.
Transfer the cooked base mixture to a high-speed blender.
Add potato flakes, salt, and 1/4 cup water. Blend for 4 1/2 minutes until smooth.
Turn off the blender. Add the curdled soymilk and blend 30 seconds more.
Pour into a pint mason jar or similar. Cool, then refrigerate. Clean the blender right away.