[Churchillspirit]

I add vinegar when hard boiling eggs. If a shell cracks the vinegar makes the white congeal.

Must try the "pin prick" thing though.

[nikos1121]

Yes, last year there were several people saying that they add white vinegar to the water. And it helps the peeling. Nothing is worse than peeling a hard boiled egg and it doesn’t peel cleanly. I think in fact, that’s marriage breaker.

[1066AD]

Pin hole is to (a) let the air out as it heats and (b) allow water to enter between the membrane and the shell when it cools - so the shell doesn’t stick to the cooked egg.

Also found pics: http://www.cookingforengineers.com/article/249/Soft-Boiled-Eggs