Preheat your oven to 225°F (107°C) to dry out the meringue without browning.
Line two baking sheets with parchment paper and trace 8-inch circles for meringue layers.
In a clean mixing bowl, combine egg whites, cream of tartar, and salt. Whip on medium speed until foamy.
Gradually add sugar while whipping until stiff, glossy peaks form.
Gently fold chocolate chips into the meringue with a spatula, taking care not to deflate it.
Transfer meringue to a piping bag fitted with a large round tip and pipe two 8-inch circles onto prepared sheets.
Bake meringues for about 2 hours until dry to the touch. Turn off oven and let cool completely inside.
Slice fresh strawberries and toss with 1-2 tablespoons granulated sugar. Let sit for 15-20 minutes to release juices.
Whip heavy cream with powdered sugar until soft peaks form, being careful not to overwhip.
Assemble the cake by placing one meringue layer on a platter, spreading half the whipped cream, then half the macerated strawberries.
Top with the second meringue layer, then repeat with remaining cream and strawberries.
Decorate the top with fresh raspberries or other berries and serve immediately or chill before serving.