Combine 6 egg yolks with a 15 ouce can of sweetened condensed milk, mixing well. Then add a little less than 1/2 cup of key lime juice (or any kind of lime juice), blending well.
Pour this into a pie crust, graham cracker or regular, chill well, or even freeze. Serve with whipped cream on top.
That's pretty traditional I think. If you put too much lime juice it won't set up, we've found.
Thanks! May have to try it sometime...