Having seen the picture of the Tamago (see pic below), a bunch of us just knew we had to try and replicate this burger here in the U.S.
To recreate the Tamago, we needed the following:
1. A Big Mac
2. The preformed, microwaved egg found in the Egg McMuffin
3. The bacon from the Bacon, Egg and Cheese Biscuit
4. An extra hamburger patty from a regular hamburger
We ordered the two breakfast items (the Egg McMuffin and the Breakfast Biscuit), then waited about 5 minutes for the transition to the regular menu and then ordered the Big Mac and the hamburger.
After assembling everything (and drawing a small lunch time crowd), I must say, it was quite tasty. Messy, but tasty.
I don't know if the extra patty is necessary, but I would definitely favor a McDonald's burger with eggs and bacon.
I'm not sure how much the Tamago is in Japan (with the exchange rate, etc.), but "my" Tamago was nearly $10. Still, I suppose it's cheaper than a plane ticket to Tokyo ....