
In a large pot over medium-high heat, bring the water, milk, and salt to a boil.
Stir in the oats and continue mixing with the liquid for 2–3 minutes to warm them up.
Turn off the heat. Let the oats come to room temperature, then store them in the fridge overnight.
In the morning, heat the oats for a couple of minutes, stirring constantly. Serve with your favorite topping combinations.