Traditional key lime pie has only six ingredients—graham crackers, butter, sugar, key lime juice, egg yolks, and sweetened condensed milk.
I am a key lime pie purist, when it comes to it. I want my filling to be a perfect balance of tart and sweet, with the lime flavor really punching through. I like a creamy custard-y texture, rather than something more solid (like a cheesecake), or super light (with a whipped texture).
Then, I want a graham cracker crust that is buttery and a little sweet, with a bit of crumble to it. Beyond that…I don’t love piling on meringue or whipped cream or whatever. I feel it detracts from the flavor, rather than enhances.