You can use lemons as well. The taste is quite a bit different though. You can ALSO use ORANGES!!! Any citrus fruit will work.
Lime juice is quite palatable when mixed with the egg yolk and oil. Lemon juice with egg tastes... how shall i put it.. different. I realize SOME may like it however. I have done this cleanse with lemons and i passed gall-stones, but it did not taste that good to me. My belief is that the lemon juice produces a slightly different type of reaction. Egg yolks mixed with orange juice makes a DELICIOUS drink!
You can also use whole eggs, instead of just the yolk. This also induces a different type reaction and therefore a slighly different cleanse as well, so if you are fond of whole eggs, by all means, use them whole.