Cut the potato in half, place the cut side down, and slice thinly into quarter-moon shapes. Soak in water and drain.

Cut the bacon into 1cm wide strips.

Place the bacon and potato in a microwave-safe mug, cover loosely with plastic wrap, and microwave at 600W for 2 minutes. Add the soup base ingredients and mix. Crack an egg into the mug, pierce the yolk with a toothpick in several places, cover loosely with plastic wrap, and microwave at 600W for another 2 minutes.