4 large eggs, separated (whites brought to about room temp) .
1/2 c lemonade .
Garnish .
1/4 tsp cream of tartar .
1/2 tsp vanilla extract .
salt (a big pinch) .
1 c sugar, divided .
1/4 c cold water .
1/2 c fresh lemon juice .
1 (1/4 oz) envelope unflavored gelatin .
fresh blueberries or raspberries or hulled strawberries .
fresh whipped cream .
1 tsp grated lemon zest
Directions
Step #1 Bake piecrust according to package directions & let cool; put in the fridge until ready to use.
Step #2 Meanwhile, add water to a small bowl; sprinkle the gelatin over the water & set aside.
Step #3 In a medium saucepan (preferably nonstick), whisk the lemonade, lemon juice, lemon zest, egg yolks, 1/2 c of sugar, & salt together.
Step #4 Place over med-heat/flame & cook, stirring constantly, for about 7-9 mins or until the mixture thickens enough to coat the back of a spoon (do not let mixture boil or it will curdle).
Step #5 Remove from heat; stir in the the softened gelatin & as soon as possible pour this into a large bowl.
Step #6 Let cool for 10 mins; then put in the fridge for 50-60 mins or just until the mixture turns lumpy (this indicates the gelatin is starting to thicken it).
Step #7 In a large bowl, beat the 4 egg whites until soft peaks form.
Step #8 Beat in the cream of tartar.
Step #9 Gradually add in the remaining 1/2 c sugar, beating at high speed until the whites are thick & glossy.
Step #10 Beat in the vanilla.
Step #11 The whites should be firm but not dry.
Step #12 Gently fold about one-third of the whites into the lemon mixture.
Step #13 Add the remaining whites & continue to fold until evenly mixed.
Step #14 Transfer the filling into the cooled pie shell & smooth the top this with a rubber spatula.
Step #15 Cover up with loosely tented foil wrap & put in the fridge for at least 3 hrs or overnight.
Step #16 Serve with a dollop of whipped cream & berries on top.