Share 'adding spice/favour to chocolate'

Hi all, I have been following thsi forum, learn a lot from every single post and blog post. however there is still one question in regards to adding spice and favour to chocolate.. I am currently experiementing to add some spice.favouring to my tempered chocolate by using infusing method. However, to infused butter, should i use only cocoa butter? can i use unsalted?? 2) i am looking to do up a…