Add water and vinegar to a microwavable dish (I used a measuring cup)
Crack egg into the water and gently poke yolk 4-5 times with a toothpick. Cover with plastic wrap.
Microwave 1 minute. Check egg and cook an additional 15-20 seconds if needed. Remove from water immediately to stop it from cooking.
(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)