Fill a saucepan with 2-3 inches of water and add a splash of vinegar.
Bring the water to a gentle simmer over medium heat.
Crack an egg into a small bowl, ensuring the yolk remains intact.
Stir the simmering water to create a gentle whirlpool.
Carefully slide the egg into the center of the whirlpool.
Cook for 3-4 minutes for a runny yolk, or longer for a firmer yolk.
Use a slotted spoon to remove the egg from the water.
Let it drain on a paper towel to remove excess water.
Season with salt and pepper to taste.
Serve immediately on toast or your preferred dish.