Melt 100 g White chocolate, either gently in a pan or in short bursts in the microwave.
If melting in the microwave, use a low heat and melt in bursts of 15-30 seconds.
Individually dip 100 g Frozen raspberries in the melted white chocolate to coat them completely. Put onto a lined baking tray and allow to set.
Meanwhile, melt 100 g Dark chocolate. Again, either gently in a pan or in short bursts in the microwave.
Once the white chocolate has set, coat them in the melted dark chocolate.
Put the coated raspberries back onto the lined tray (or a new one) and return to the freezer for 20-30 minutes.
Notes
This is optional, but adding a little coconut oil to the melted chocolate helps make it smoother and easier to dip. It also helps the chocolate set with a thinner, snappier shell.
Dry the raspberries thoroughly before dipping if using fresh and make sure frozen raspberries haven't started to thaw. Any water left on the fruit can stop the coating from sticking properly.
Choose firm raspberries. Very ripe raspberries are delicious, but they can break apart when dipped.
Make sure the first layer completely is completely set before adding the dark chocolate. If the first layer is still soft, it may melt or slide off when dipped into the warm chocolate.
Let the melted chocolate cool slightly before dipping the frozen raspberries. It should still be smooth and runny, but not hot.
Use a fork or cocktail stick to dip the raspberries neatly. Let the excess chocolate drip off before placing them back on the tray.
Keep the raspberries in a single layer while freezing. Once they are fully frozen, you can transfer them to a container or freezer bag.