Mapa de Lima Recipe: Peruvian Lime Pie

Mapa de Lima, also known as Peruvian lime pie, is a refreshing no-bake dessert with a buttery cookie crust, a silky sweet-tart lime filling, and a cloud of meringue topping. It is a beloved classic in Peru, where it is often served at celebrations and family gatherings. This recipe delivers the perfect balance of tangy and sweet, and it is surprisingly simple to make at home.

Ingredients

For the crust: 1 Â½ cups (180 g) graham cracker crumbs (or vanilla wafer crumbs)
For the crust: 6 tbsp (85 g) unsalted butter, melted
For the crust: 2 tbsp (25 g) granulated sugar
For the filling: 1 can (14 oz / 400 g) sweetened condensed milk
For the filling: 4 large egg yolks (reserve whites for meringue)
For the filling: Â½ cup (120 ml) fresh lime juice (about 4-5 limes)
For the filling: 1 tbsp (15 ml) lime zest (from 2-3 limes)
For the meringue: 4 large egg whites, at room temperature
For the meringue: Â¾ cup (150 g) granulated sugar
For the meringue: Â¼ tsp cream of tartar (optional, for stability)

Instructions

Preheat your oven to 350Â°F (175Â°C). In a medium bowl, mix the graham cracker crumbs, melted butter, and sugar until well combined. Press the mixture firmly into the bottom and up the sides of a 9-inch (23 cm) pie dish. Bake for 8-10 minutes, until lightly golden. Set aside to cool completely.
In a large bowl, whisk the egg yolks until smooth. Add the sweetened condensed milk and whisk until fully incorporated. Gradually add the lime juice and lime zest, whisking constantly. The mixture will thicken slightly. Pour the filling into the cooled crust.
Bake the pie at 350Â°F (175Â°C) for 10-12 minutes, until the filling is set but still slightly jiggly in the center. Remove from the oven and let cool to room temperature, then refrigerate for at least 3 hours, or until fully chilled and firm.
For the meringue: In a clean, dry bowl, beat the egg whites with an electric mixer on medium speed until frothy. Add the cream of tartar (if using) and continue beating. Gradually add the sugar, 1 tablespoon at a time, while beating on high speed. Beat until stiff, glossy peaks form, about 5-7 minutes.
Spread the meringue over the chilled pie, making sure to seal the edges to prevent shrinking. Use a spatula to create decorative peaks.
If you have a kitchen torch, toast the meringue until golden brown. Alternatively, place the pie under a preheated broiler for 1-2 minutes, watching closely, until the peaks are browned. Refrigerate for at least 30 minutes before serving to let the meringue set.

Tips

Use fresh lime juice: Bottled lime juice has a flat flavor and can make the filling taste bitter. Freshly squeezed limes are essential for the best taste.
Zest before juicing: Always zest the limes before juicing them, as it is much easier to zest a whole lime than a cut one.
Room temperature egg whites: For a stable meringue, let the egg whites come to room temperature before beating. Cold egg whites take longer to whip and may not reach full volume.
Don’t overbake: The filling should be slightly jiggly when you remove it from the oven; it will set as it chills. Overbaking can cause cracks.

Serving Suggestions

Serve the pie well-chilled, straight from the refrigerator. A dollop of whipped cream or a few extra lime zest curls on top make a lovely garnish. This pie is rich, so small slices are perfect. It pairs beautifully with a cup of strong Peruvian coffee or a light herbal tea.

Variations

Classic Key Lime Pie: Use key limes instead of regular limes for a more intense, floral aroma. You will need about 20 key limes for Â½ cup of juice.
No-Meringue Version: Skip the meringue and top the pie with a layer of sweetened whipped cream just before serving. This is a simpler, equally delicious option.
Ginger-Coconut Crust: Swap the graham crackers for crushed ginger snaps and add Â½ cup (40 g) of unsweetened shredded coconut to the crust mixture for a tropical twist.

Storage and Reheating

Store the pie in the refrigerator, loosely covered with plastic wrap or foil, for up to 3 days. The meringue may weep slightly after a day, but it will still taste great. This pie is best served cold; do not reheat it. For longer storage, you can freeze the pie (without the meringue) for up to 2 months. Wrap it tightly in plastic wrap and then foil. Thaw overnight in the refrigerator before adding the meringue and serving.

Frequently Asked Questions

Can I use bottled lime juice? While you can, the flavor will be noticeably less fresh and vibrant. For the best results, use freshly squeezed lime juice. If you must use bottled, choose a high-quality brand without added sugar.

Why is my meringue weeping? Weeping is usually caused by undercooked meringue or by not sealing the meringue to the edges of the crust. Make sure to spread the meringue all the way to the crust and toast it properly. Also, avoid making the pie on a humid day.

Can I make this pie ahead of time? Yes! You can prepare the pie (without the meringue) up to 24 hours in advance. Store it covered in the refrigerator. Add the meringue and toast it just before serving for the best presentation.

Do I have to bake the filling? The traditional Peruvian version is baked briefly to set the filling. If you prefer a no-bake version, you can skip the baking, but the pie will be softer and more like a mousse. It will still set in the refrigerator, but it won’t hold its shape as well when sliced.

What if I don’t have a kitchen torch? You can use your oven’s broiler. Place the pie under the broiler for 1-2 minutes, but watch it closelyâ€”the meringue can burn quickly. Alternatively, you can skip the browning altogether and serve the pie with the white meringue.

Can I use a different crust? Absolutely. A traditional shortbread crust or even a crushed pretzel crust works well. Just adjust the butter amount to ensure the crumbs hold together.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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