Place the rum and raisins into a microwave-safe bowl and heat in 30 second bursts (2-3 bursts). Set aside for 30 minutes to allow the flavour to enhance.
Place the milk chocolate into the Thermomix bowl and mix for 10 seconds, Speed 9. Set aside in a bowl.
Place the raw sugar into the Thermomix bowl and mill for 10 seconds, Speed 9.
Add the sweetened condensed milk and butter. Cook for 8 minutes, 100 degrees, Speed 3.
Cook for a further 20 minutes, Varoma temperature, Speed 3.
Add the grated chocolate and mix for 15 seconds, Speed 3.
Add the almonds and rum/raising mixture and mix for 15 seconds, REVERSE, Speed 3.
Pour the fudge into the prepared baking tin. Refrigerate until set.
Notes
RECIPE NOTES & TIPS
Use a good quality chocolate - it makes a huge difference to the final product. I recommend Cadbury, Nestle or Lindt.
Use roasted (not natural or raw) almonds - you can buy these from the supermarket.
For a non-alcoholic version, omit the rum and replace with water when heating the raisins.
Once cooked, the fudge will set very quickly - make sure your tin is prepared ahead of time.
Be careful as the mixture will be extremely hot when transferring to the baking tin!
Storing - fudge can be made up to 3 weeks ahead of time and stored in an airtight container in the fridge. Place sheets of baking paper between the layers of fudge to avoid them sticking to one another.