How to Make Lemon-Lime Mousse

A mix of lemon and lime juices gives these light-as-air parfaits a more complex citrus flavor.

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Lemon-Lime Mousse

These sweet-tart mousse parfaits taste just like the inside of a Key lime pie. Most of the prep work can be done a few days in advance — simply fold in egg whites and cream, then top with macerated berries before serving.

Follow this step-by-step guide to make the bright, summery dessert. For the ingredients list, go to the Lemon-Lime Mousse recipe.

To Make the Lemon Curd:

In a non-reactive saucepan whisk together 4 eggs, 4 yolks (reserve the 4 egg whites), 3/4 cup sugar, salt, juice, and zest. Cook over medium heat while stirring constantly, until it thickens, about 10 minutes. 

The lemon curd is done when it is as thick as pudding and coats the back of a spoon or spatula. 

Press through a fine mesh strainer. Cover with plastic wrap and refrigerate until the lemon curd is cool. It can be made a day or two ahead. 

Whip the egg whites and remaining sugar until they reach stiff peaks.

Add 1/3 of the whites to the chilled lemon curd and mix to lighten the texture of the curd. Gently fold the remaining whites in.

Whip the heavy cream with the vanilla extract, until stiff peaks. 

Fold the whipped cream gently into the lemon mousse. Fold just until the cream is smoothly incorporated. 

Place the mousse into a piping bag and fill the jars evenly.

To Make the Strawberries:

Start with very fresh and sweet berries. If they aren't as sweet as you like, you can add more sugar, or less if they are very ripe. 

Mix the berries, sugar and liqueur in a bowl. Let the berries sit for at least 30 minutes, so they release some of their juices. This can be made several hours in advance.

Spoon the berries over the mousse. 

They can be served immediately or refrigerated for several hours.

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