01 - Preheat oven to 350°F. Line a 9x13-inch baking sheet with parchment paper and lightly grease the surface.
02 - Whisk together flour, granulated sugar, salt, and baking powder in a mixing bowl until evenly combined.
03 - Beat eggs, milk, melted butter, and vanilla extract in a separate bowl. Pour the wet mixture into the dry ingredients and stir until just combined.
04 - Spread the batter evenly onto the prepared baking sheet. Bake for 12 to 15 minutes until the cake springs back when lightly touched. Allow to cool completely.
05 - Whip the heavy cream with powdered sugar and vanilla extract using an electric mixer or whisk until stiff peaks form.
06 - Gently remove the cooled cake from the pan and place on a clean work surface. Trim the edges for neatness.
07 - Spread an even layer of whipped cream over the cake surface, leaving a 1/2-inch border along one long side. Sprinkle the diced strawberries evenly over the cream.
08 - Starting from the opposite long side, tightly roll the cake using the parchment paper to guide the roll. Refrigerate for 20 minutes to set.
09 - Cut the rolled cake into 8 even pieces resembling sushi rolls. Top each piece with a strawberry slice and a sprinkle of chopped mint if desired. Serve chilled.