Preheat your oven to 350°F (175°C). Do not grease the angel food cake pan; the batter needs to cling to the sides for proper rising.
In a small saucepan over medium heat, combine the mixed berries, honey, and lemon juice. Stir gently and let simmer for about 5-7 minutes until the berries start to break down. Remove from heat and let it cool slightly.
In a clean mixing bowl, using an electric mixer, beat the egg whites on medium speed until frothy. Add the cream of tartar and salt, then increase the speed to high and continue beating until stiff peaks form.
While continuing to beat the egg whites, slowly add 1 cup of granulated sugar, one tablespoon at a time. Continue beating until the mixture is glossy and stiff.
Gently fold in the vanilla and almond extracts. Be careful not to deflate the egg whites.
Sift the remaining ½ cup of granulated sugar and the cake flour together over the beaten egg whites. Using a rubber spatula, carefully fold the dry ingredients into the egg white mixture in three additions until just combined.
Spoon the batter into the ungreased angel food cake pan and smooth the top with a spatula.
Bake in the preheated oven for 35-40 minutes or until the top is golden brown and springy to the touch. Invert the pan immediately onto a cooling rack to cool completely before removing from the pan.
Once cooled, run a knife around the edges before gently removing the cake from the pan. Slice the cake and serve with a generous spoonful of berry compote on top.
Notes
Serve the cake slices on white plates to contrast with the colorful berry compote. Garnish with a sprig of fresh mint for added color and freshness.