01 - Preheat oven to 350°F. Line the bottom of a 9-inch springform pan with parchment paper.
02 - Beat egg yolks with 1.75 oz sugar until pale and thick. Gently mix in melted butter and vanilla extract.
03 - Whisk egg whites and salt to soft peaks. Gradually add remaining sugar and whip to stiff peaks.
04 - Fold almond flour and all-purpose flour into yolk mixture. Fold in one-third of egg whites to lighten, then gently fold in remaining whites until just combined.
05 - Pour batter into prepared pan. Bake 18-20 minutes until golden and toothpick comes out clean. Cool completely in pan.
06 - Soak leaf gelatin in cold water for 5 minutes. If using powdered gelatin, sprinkle over cold liquid and let bloom 5 minutes.
07 - Puree raspberries with sugar and lemon juice. Strain through fine mesh sieve to remove seeds. Heat one-third of puree gently, dissolve gelatin completely, then combine with remaining puree. Cool to room temperature.
08 - Whip cold heavy cream to soft peaks.
09 - Gently fold cooled raspberry mixture into whipped cream until smooth and uniform.
10 - Spread raspberry mousse evenly over cooled almond sponge in springform pan. Smooth top. Chill at least 4 hours until fully set.
11 - Remove cake from pan. Top with fresh raspberries, dust with powdered sugar, and garnish with mint leaves.