Line an 8x8-inch tin with baking paper, leaving a little hanging over the edges for easy removal later.
Break up the white chocolate and add it to a saucepan with the condensed milk. Place the pan over low heat on the stove.
Keep the heat low and gently stir until the chocolate has melted. Alternatively, you can melt the ingredients in short bursts in the microwave, stirring every 20 seconds to prevent burning.
Transfer half of the fudge mixture to a separate bowl then stir in the freeze-dried strawberry powder and food colouring. Make sure to work quickly as the fudge will set quite fast.
Transfer the white fudge mixture to your lined tin and spread it evenly into place.
Put spoonfuls of the pink strawberry fudge mixture on top of the white then use a toothpick to swirl the two colours together.
Top with freeze-dried strawberry pieces.
Refrigerate for at least 4 hours until firm, then cut into squares and enjoy.