Tuck into a real Key Lime Pie in the Florida Keys

Imposter pies in various lime-green hues may pop up on menus all over America, but for a glorious and authentic Key Lime Pie you'll need to go to the Florida Keys.

A delicacy born out of necessity, the pie was developed from a lack of fresh milk before the arrival of the railroad in 1912.

Instead, canned condensed milk was used and found to make an excellent custard pie filling when combined with extremely sour Key lime juice and egg yolks. Luckily the curdling of ingredients and the general heat and humidity of the Keys generates just the right consistency without the need for cooking.