It happened more recently to me. About a year ago somebody started talking about key lime pie. Key lime pie has always been one of my favorites, but that conversation began a nearly year-long quest to find the best key lime pie in the state.
What makes a great key lime pie? It takes a lot. It needs to have a good balance between the key lime custard and the whipped cream. It needs to have a good balance of tartness and sweetness (in my opinion too many key lime pies err on the side of sweetness, which ruins the key lime pie), with the best key lime pies having a tartness that gets you in your jaw. It needs to have a strong lime flavor, and it must have a great graham cracker crust.