Over a bowl crack the egg through a fine mesh sieve. This will allow the loose egg whites to separate. You can save the loose egg whites for another recipe.
In a pot on the stove add water and let it come to a simmer.
Add the vinegar and as it simmers give it a little swirl with a spoon or anything you have on hand.
Gently add the egg and set the timer for five minutes.
Remove it with a slotted spoon and set it onto a plate with paper towel. Increase the time accordingly if you like a firm egg and not a runny yolk.
Enjoy on toast, salads, English muffins or any other way.