Prepare a work surface lined with parchment paper.
Rinse and thoroughly dry strawberries. Set aside until you are ready to use them.
Prepare a bain marie: In a pot bring water to a boil. Place a bowl filled with the chopped chocolate over the boiling water pot. Continue stirring until the chocolate is fully melted.
Take the bowl off the heat and stir in the butter, vanilla and orange zest.
Gently hold the strawberries just underneath the leaves and dip them into the chocolate until they are coated with chocolate. Lift the strawberry out of the chocolate and let the excess drip off.
Place the chocolate strawberries on parchment paper and allow the chocolate coating to set for approximately 1 hour.
Garnish with melted white chocolate. Let set for another hour.