In a small saucepan, bring the water and butter to a rolling boil.
In a large bowl, combine the cornmeal, salt, and sugar. Pour the boiling water and butter over the cornmeal mixture and stir to combine. Cover the bowl (use plastic wrap or a clean kitchen towel) and let it sit for 10 minutes.
In a separate bowl, beat the eggs and milk together. Add the flour and baking powder. Mix lightly. Add the egg mixture to the cornmeal mixture, stirring gently just to combine.
Heat a lightly oiled griddle or heavy skillet over medium-high heat (375 degrees F on an electric griddle). Portion 1/4-cup measures of batter onto the hot griddle, spacing them apart. When bubbles cover the surface of the pancakes and their undersides are lightly browned, turn them over and cook for about 2 minutes more, until the other sides are browned.
Serve immediately with butter and warm maple syrup.
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