# Cook an Egg in 15 Minutes

mossman05
Posers and Puzzles 23 Jul '07 18:22
1. 23 Jul '07 18:22
How would you cook an egg in exactly 15 minutes when you didn't have a watch, clock, or timer, but only a 11 minute hour glass and a 7 minute hourglass. It is possible to do this in two turns, not including starting the timers.
2. PBE6
Bananarama
23 Jul '07 19:16
Originally posted by mossman05
How would you cook an egg in exactly 15 minutes when you didn't have a watch, clock, or timer, but only a 11 minute hour glass and a 7 minute hourglass. It is possible to do this in two turns, not including starting the timers.
Turn over both hourglasses to start. When the 7-minute glass runs out, there will be 4 minutes left in the 11-minute glass. Turn the 11-minute glass over and start cooking the egg, and then turn it over again once the 4 minutes have run out. The total cooking time will be 15 minutes, and the total time will be 22 minutes.
3. uzless
The So Fist
23 Jul '07 19:242 edits
Originally posted by PBE6
Turn over both hourglasses to start. When the 7-minute glass runs out, there will be 4 minutes left in the 11-minute glass. Turn the 11-minute glass over and start cooking the egg, and then turn it over again once the 4 minutes have run out. The total cooking time will be 15 minutes, and the total time will be 22 minutes.
turn both glasses over...start the egg. When the 7 minute glass runs out turn the 7 minute glass over. when the 11 minute runs out, turn the 7 minute back over. When the 7 minute runs out, eat your egg..

7+4+4=15

you get to eat your egg 7 minutes sooner than pB6's ðŸ˜‰
4. Palynka
Upward Spiral
23 Jul '07 19:271 edit
Originally posted by uzless
turn both glasses over...start the egg. When the 7 minute glass runs out turn it over. when the 11 minute runs out, turn the 7 minute back over. When the 7 minute runs out, eat your egg..

7+4+4=15

you get to eat your egg 7 minutes sooner than pB6's ðŸ˜‰
EDited out.
5. 23 Jul '07 19:44
yeah, both PBE6 and uzless are right
6. 24 Jul '07 20:41
I prefer my eggs scrambled.
7. Suzianne
Misfit Queen
01 Aug '07 06:32
Originally posted by mossman05
How would you cook an egg in exactly 15 minutes when you didn't have a watch, clock, or timer, but only a 11 minute hour glass and a 7 minute hourglass. It is possible to do this in two turns, not including starting the timers.
Why in hell would you cook an egg for 15 minutes when it's done after three?
8. wolfgang59
Mr. Wolf
01 Aug '07 07:59
Depends where the egg came from and what temperature the water is.

Ostrich eggs take up to an hour to soft boil.

For the BBC Chef Competition 'The Great British Menu' top chef Sat Bains cooked his duck eggs for something like 6 hours!! (The water was kept at a constant 30 Centigrade)
9. Suzianne
Misfit Queen
02 Aug '07 21:29
Originally posted by wolfgang59
Depends where the egg came from and what temperature the water is.

Ostrich eggs take up to an hour to soft boil.

For the BBC Chef Competition 'The Great British Menu' top chef Sat Bains cooked his duck eggs for something like 6 hours!! (The water was kept at a constant 30 Centigrade)
Hmmm, good point.

30C?

That's barely above room temperature, isn't it?
10. wolfgang59
Mr. Wolf
03 Aug '07 06:45
86F .. maybe it was a bit warmer and maybe even longer. It was certainly abizarre way to boil ann egg - and they were still really soft when they came out.

Must have tasted delicious tho cos the dish won the competition for best starter and was served to the French President at the British Embassy in Paris.