In a medium-sized pot, stir together the corn meal and 5½ cups of water until smooth.
Place over medium-low heat.
Heat the mixture slowly, stirring often with a whisk or wooden spoon to prevent lumps, until it begins to simmer.
Once simmering, stir in about 1 teaspoon (5 ml / 0.2 fl oz) of salt, the sugar, and the butter.
Reduce the heat to low and continue to simmer gently for 35 to 40 minutes, stirring frequently to prevent it from sticking to the bottom of the pot.
The corn meal mush is ready when it has the consistency of a thin, pourable pudding. If it seems too stiff or grainy, stir in the remaining ½ cup of water.
Pour the finished mush into a smooth-surfaced 1. 5-quart bowl or casserole dish. Allow it to cool to room temperature, then cover and transfer to the refrigerator to chill completely for at least 4 hours, or until it has jelled into a solid, firm mold.
When ready to serve, run a thin knife around the edge of the mold and carefully invert it onto a serving platter.
Slice the cornmeal pudding thickly.
To serve, place one thick slice on each plate.
Top generously with a few spoonfuls of crumbled farmer cheese, a large dollop of sour cream, and a crack of fresh black pepper.