Fill a pan with water and bring the water to a boil. When the water boils, add 1 teaspoon of optional vinegar if you want, and lower the heat to a gentle simmer.
Place the eggs on a slotted spoon and carefully lower them into the boiling water, anmd simmer for 4 minutes.
Remove the eggs with a slotted spoon and immediately place under cool running water to stop the cooking process.
Transfer the eggs onto the egg-cups. To remove the cap, gently tap around the top with a dented knife or use an egg-cutter. Season your perfect soft-boiled eggs with salt and pepper to taste. Enjoy straight away with toasted bread on the side.
Egg size:For small eggs, allow 30 seconds less cooking time.For large eggs, allow 30 seconds more cooking time.