For the tart shell:.
In a food processor, process the flour, salt (1/4 teaspoon extra is used because of the nature of the filling, for any other sweet tart application, this would be 1/2 teaspoon), and sugar. Add the shortening and butter and process the mixture until there are no visible butter chunks left, approximately 8-10 long pulses.
In a small bowl, whisk together the egg yolk and water. Set aside.
Place the flour mixture into a large bowl and add the egg yolk mixture. Mix together with a spatula until it comes together. Place dough in plastic wrap and refrigerate for 1/2 hour.
Roll out tart dough between two pieces of plastic wrap or press evenly into a 9 inch tart pan or ring. Make sure the sides are not too thin and that the bottom meets the sides at a 90 degree angle (so there is not a lot of dough in the corners where the bottom meets the sides). Roll the rolling pin over the top of the tart pan to clean any dough off of the rim.
Place the tart shell in the freezer for at least 1/2 hour.
Preheat oven to 375°F.
Remove the tart shell from the freezer and press two sheets of aluminum foil across the tart pan. Press the foil into the pan so that it is form fitting and no dough rim is exposed. Dock the foil and dough with a fork only a few times. Place pie weights, dry beans or rice into the tart pan.
Place the tart pan on a baking sheet and bake the tart shell for 10 minutes, rotate pan and bake for 10 more minutes. Remove tart shell from oven, remove the pie weights and foil and place the tart shell back in the oven for 10 more minutes.
For the tart filling:.
While the dough is in the oven, in a large bowl, whisk the 4 egg yolks, sweetened condensed milk, and margarita mix.
Pour the mixture into the hot tart shell and return to the oven. Turn the heat down to 350°F.
Bake for 15 minutes. Remove and cool.
Serve chilled.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	208.4 Kcal (873 kJ)
Calories from fat	78.14 Kcal
		% Daily Value*
Total Fat	8.68g	13%
Cholesterol	47.7mg	16%
Sodium	376.69mg	16%
Potassium	72.7mg	2%
Total Carbs	25.35g	8%
Sugars	9.05g	36%
Dietary Fiber	0.81g	3%
Protein	4.01g	8%
Vitamin C	0.8mg	1%
Iron	0.5mg	3%
Calcium	22.4mg	2%

Amount Per 100 g
Calories	253.93 Kcal (1063 kJ)
Calories from fat	95.21 Kcal
		% Daily Value*
Total Fat	10.58g	13%
Cholesterol	58.13mg	16%
Sodium	459mg	16%
Potassium	88.59mg	2%
Total Carbs	30.89g	8%
Sugars	11.03g	36%
Dietary Fiber	0.98g	3%
Protein	4.89g	8%
Vitamin C	0.9mg	1%
Iron	0.6mg	3%
Calcium	27.3mg	2%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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