Perfected through the trial and error of many recipes over the years, this version is as close to the original late-1800s recipe that you will find.
Time: 5 hours
Tools: 9" Pie Pan Mixing Bowls Wisk or Mixer Measuring Cups Measuring Spoons Mixing Spoon Microplane or Zester OPTIONAL: Citrus Reamer Pastry Bag Baking Parchment Cookie Sheet
Diet: Lacto-Ovo
Portions: 8
CRUST
2 cups Graham Cracker Crumbs
1/4 cup Sugar
1 stick Melted Butter
MERINGUE
4 Egg Whites
1/2 cup Sugar
1/2 tsp Cream of Tartar
1/4 tsp Salt
1/2 tsp Vanilla
FILLING
4 Egg Yolks
1/2 cup Key Lime Juice
14 oz can Sweetened Condensed Milk
2 tsp Lime Zest
1 Pre-heat oven to 350 degrees. Oven use is optional
2 Combine crust ingredients in a mixing bowl
3 Press mixture into the bottome and sides of a 9" pie pan
4 Bake until golden brown, about 10 minutes, or chill for an hour. You can buy a graham crust instead
5 Set aside to cool completely
6 Mix egg yolks until smooth
7 Add the rest of the filling ingredients and stir until evenly mixed; You will need about 20 key limes for the juice; Or, use Nellie & Joe's Key Lime Juice (but don't)
8 Pour filling mixture into the cooled pie shell and refrigerate until set, about 4 hours
OPTIONAL: Some are uncomfortable with raw egg recipes. The pie can be baked for 12 minutes before cooling and refrigerating to set.
WARNING Do not overcook the pie. It will lose its creamy texture and become spongy. It must fully set in the refrigerator.
9 Beat room temperature egg whites until frothy
10 Slowly add sugar 1 or 2 tbsp at a time, until it desolves. This makes the meringue smooth
11 Add vanilla and continue beating. You can not overbeat meringue
12 Beat until peaks are stiff and meringue is glossy
13 Use pastry bag to add 8 medallions of meringue around the edge of the pie, or just spoon dollops around the pie
OPTIONAL: As with the filling, if you are concerned about raw eggs you can bake the meringues until they start to brown a little at the tips; Bake them on a parchment lined cookie sheet and add them to the pie after they cool to room temperature