Ingredients:

water (tap water should be fine unless the recipe calls for bottled water)
1 tablespoon vinegar
4 eggs

Cooking Recipe:

Heat 2 to 3 inches of water in a large saucepan over medium heat until almost boiling. Add vinegar. Crack eggs into 4 small cups and slide one by one from the cup into the simmering water. Maintain the water just below a simmer, reducing the heat to low if necessary. Cook until the whites are set and the centers are still soft.