Thanks so much for your incredibly helpful response Steve!
I have now been able to create a more realistic sugar material using the noise layers etc. as suggested however I am now stuck at creating the grayscale map.
I’ve searched for Youtube videos on how to create a grayscale map but couldn’t really find anything so as I was searching it looked like it had something to do with 3D painting in C4D but none of them show how to paint on the alpha channel? Can I please ask for a basic walkthrough on how to set up my now created material with a alpha/greyscale map and also how to paint in the parts where I want my material to show?
Thanks in advance!