When the mixture looks creamy, return the saucepan to a very low heat, add the rest of the milk.
Process until the mixture looks like fine bread crumbs.
Add the water and process until the mixture looks like small peas.
Process for a few seconds, until the mixture looks grainy.
If mixture looks too dry, splash in some water to keep it from burning.
The mixture should look clear or slightly yellow-green and may have a few small particles in it.
Add peas and a tablespoon of water if mixture looks dry.
When the mixture looks like coarse bread crumbs, you have mixed enough.
In a round bowl, therefore, the mixture looks much like a red human eye.
Process for another 10 seconds or until the mixture looks like cornmeal.