Mix together cornmeal, sugar, and salt.
Slowly add the boiling water to the cornmeal mixture. Stir until combined, but do not overmix.
Warm a griddle or frying pan over medium heat.
Spread a Tbsp of shortening in the pan. Pour 1/4 cup batter into the pan.
After the edges of the johnnycake dry, wait about 30 seconds, then flip it over with a spatula.
Press the center of the johnnycake down with the spatula.
Serve warm with syrup, honey, gravy, or beans.