01 - Preheat oven to 350°F. Line a 9 x 13 inch baking sheet with parchment paper for easy sponge removal.
02 - Beat eggs and granulated sugar in a bowl until thick and pale, approximately 5 minutes. Incorporate vanilla extract and salt. Gently fold in flour until just combined, being careful not to deflate the mixture.
03 - Spread batter evenly across the prepared baking sheet. Bake for 12-15 minutes until surface appears lightly golden and springs back when touched gently.
04 - Invert baked sponge onto a clean kitchen towel dusted with powdered sugar. Remove parchment paper carefully. Roll the sponge together with the towel starting from the short end. Allow to cool completely while rolled.
05 - Whip heavy cream with powdered sugar and vanilla until stiff peaks form. Gently fold diced strawberries into the whipped cream mixture.
06 - Unroll the cooled sponge cake carefully. Spread strawberry cream filling evenly across the surface, maintaining a 1/2 inch border around edges. Roll the sponge tightly from the short end to encase the filling.
07 - Trim both ends of the roll for a clean appearance. Cut crosswise into 3/4 inch thick slices to resemble sushi pieces. Optionally roll outer edges in desiccated coconut. Decorate with thin strawberry slices or fresh mint leaves.