Grapefruit is not my favorite citrus fruit but it makes a great pie, in this case, tart. As grapefruit season is coming to a close this is my ode to grapefruit.
Start by making the tart shell, then the filling and finally meringue. Here we go!
1 large egg
2 1/4 cup of flour (all purpose)
8 oz of sweet butter
1/2 cup of sugar
At this point add the egg and mix well till all the lumps have been smoothed out. After the butter mixture is smooth, add the flour and mix until combined. The dough should come together to form a ball. Tear off two large pieces of parchment paper, set the dough in between the parchment paper and roll out the dough until it’s even, the dough should be a quarter inch thick. I like to chill the dough (in the fridge) to make it easier to work with. Set the oven to 375. Pull the dough out of the fridge after five minutes; it should be firm but pliable. Carefully lay the dough into the tart pan, if it tears, no big deal you can patch it up with the extra. (There will be a fair amount of dough left over which you can roll out and use any extra filling to make cookie sandwiches). Once you have the dough in the pan, dock it with a fork (only the bottom).
The shell needs to baked blind, so lay a piece of parchment paper on the dough and top the parchment with dry beans. Pop the dough in a 375 oven for 20 minutes or until edges are golden brown.
3/4 cup of sugar
a scant 1/3 cup of cornstarch
a heaping 1/4 tsp of kosher salt
1 cup of fresh grapefruit juice
juice from 1 tangerine (or half an orange)
juice from half a lemon.
1/2 cup of water
4 egg yolks (separate the eggs and reserve the whites for the meringue)
1 heaping tsp of grapefruit zest
4 tbsp of sweet butter
Mix ingredients in a medium sauce pot, except for the butter and the zest. Heat the sauce pot over medium low heat. Stir occasionally with a whisk, once the mixture starts to boil and thicken, stir constantly. Turn the heat down to a low flame and stir for 3 minutes then remove from the fire. Add the butter and zest, stir with the whisk until the butter has melted and is fully incorporated. Set your custard aside and be sure to place plastic wrap directly on top of the custard to prevent a skin from forming.
By this time your tart shell should almost be done. Once the shell is fully baked pull it out of the oven and let it rest. Now is the time to make the meringue.
4 egg whites
a pinch of cream of tartar (this helps stabilize the whites)
3 tbsp of sugar
In a stand up mixer bowl mix the four egg whites and the cream of tartar, on medium high speed whip the white to soft peaks (the whites should be about three times the original size). Turn the mixer down to low and add the sugar one tablespoon at a time, once the sugar is mixed in completely, add the next tablespoon. Whip until you can see noticeable ribbons forming in the mixing bowl while the whisk is moving. Stop the mixer and pull the whisk out. You should have stiff peaks that look like this:
If they do not hold a peak, whip them a little more until they hold a nice peak. Be careful not to over whip the whites. Over whipping will cause them to curdle in a sense, and once they get to that point they’re unusable and you will have to start over. If you do find that you need to make a new meringue try to bring the new whites up to room temperature then start the process again.
Now that you have everything ready to go you can assembly the tart and get ready to bake it. First, put the custard into the tart shell so that it comes up to the top of the shell. Second, Spoon the meringue on top of the custard, covering it fully. The meringue should stand about one to two inches above the custard. With the back of the spoon create small peaks (or leave it smooth if you like). Now your tart is ready for the oven. Pop it in the oven, still at 375, for seven to ten minutes or until the top is golden brown. Pull the tart out of the oven and let cool completely before cutting and serving. This will be hard but it will be worth the wait!
Grapefruit Meringue Tart.
This can also be made into a traditional pie using the dough above or any standard pie dough.