Heat water and milk in a medium saucepan over medium-high heat. Bring to a boil.
Once water starts to bubble, add salt and gradually whisk in cornmeal. Continue whisking to prevent lumps from forming. Reduce the heat to a gentle simmer and cook, covered 25-30 minutes, stirring every 5 minutes or so, so that polenta does not stick to bottom of pan. Polenta will thicken as it cooks.
Once it is finished cooking, remove from heat.
Add 3-1/2 tablespoons of butter and 1/2 cup of grated Parmesan cheese. Stir until incorporated.
Taste and adjust the seasoning as needed.
Ladle into serving bowls. Serve warm, sprinkled with additional Parmesan cheese, a small pat of butter and fresh herbs on each bowl.
Enjoy!