01 - Preheat oven to 350°F. Line a 9 x 13 inch baking sheet with parchment paper.
02 - Beat eggs and granulated sugar with electric mixer until thick and pale, approximately 5 minutes. Add vanilla extract and salt. Gently fold in flour until just combined.
03 - Spread batter evenly over prepared baking sheet. Bake for 12-15 minutes until lightly golden and springy to touch.
04 - Turn sponge onto clean kitchen towel dusted with powdered sugar. Remove parchment paper. Roll sponge with towel from short end and allow to cool completely.
05 - While cake cools, whip heavy cream, powdered sugar, and vanilla extract to stiff peaks. Gently fold in diced strawberries.
06 - Unroll cooled sponge. Spread strawberry cream mixture evenly, leaving 1/2 inch border. Re-roll sponge tightly.
07 - Slice off ends for neatness. Cut into 3/4 inch pieces. Roll edges in desiccated coconut if desired. Garnish with thin strawberry slices or mint.