Tip the sugar, cream, butter and glucose syrup into a medium saucepan and heat to dissolve the sugar and melt the butter, stirring constantly.
Once dissolved, increase the heat and bring the syrup to a steady boil. Keep bubbling, stirring occasionally to stop the sugar from catching, until the mixture reaches the soft-ball stage (whereby a teaspoon of hot syrup is dropped into a bowl of very cold water and forms a soft ball).
Remove the pan from the heat and let rest for 5 minutes. Stir in a good pinch of salt, then beat the mixture with a wooden spoon until the fudge thickens and loses its glossy shine.
Stir in the mashed banana then quickly pour the fudge into the prepared tin, banging the tin gently on the countertop to smooth the surface.
Sprinkle the cooked bacon over the and leave to cool down overnight. (Don’t put it in the fridge as it will become sticky and won’t set properly.)