In a large mixing bowl, combine the mixed dried fruit, sweetened condensed milk and Baileys Irish cream, along with ½ cup of water.
Cover bowl with plastic wrap and refrigerate overnight *see notes
After soaking the fruit, remove it from the fridge and stir again. Let it sit until it comes to room temperature
While the mixture comes to room temperature, preheat your oven to 150°C/300°F, then spray your 20cm cake tin and line it with baking paper.
Add the self-raising flour to the fruit mixture and fold through until combined
Pour batter into prepared cake tin and smooth over with a silicone spatula or offset spatula
Wrap a double strip of brown paper around the outside of the cake tin and secure it with kitchen string *see notes
Bake the cake for 2 hours, or until an inserted skewer comes out clean
Remove cake from the oven and allow it to cool inside the tin. Once cooled, it can be wrapped in the baking paper and then 2 layers of tightly wrapped foil.
Cake can be eaten straight away, or stored sealed in paper and foil for a few months