Start searching this site and other sites in the web for key words related to aromatics, including "topping", "sauce", "casing"
Check out some threads in the home blending section of this forum:
For example:
Just for shits & giggles, I recently tried topping some burley. I had previously topped some Virginias with rum, but that’s pretty easy. This time I incorporated some molasses, and I surprisingly found something close to an effective ratio. For 1 oz of burley (Peretti BPC), I mixed up 2...
pipesmagazine.com
And there's a section on home blending on the pipe smokers dens forum and the fair trade tobacco forum has some stuff too.
Examples:
So after the success of the BBBB experiment, I wanted to try something else. My whatever jar was almost full from about 25 years of leftovers, odds and ends, and cigar clippings. And it wasn’t very tasty honestly. So I thought, there’s a candidate. I opened the jar and took a big whiff...
pipesmokersdens.com
Hello, I am interested in creating a topping for some of my home grown tobacco and I cannot seem to find detailed information on how pipe tobacco topping is made or used. I have some organic vanilla beans that are over 5 years old sitting in glass tubes that I intend to use and I don't want to...
fairtradetobacco.com
Also, if there any aromatics or blenders that you especially like, try searching the web for details on the ingredients of their toppings
So maybe search for "wilke peanut butter ingredients" or something.
But basically, try adding something that smells good to some tobacco and see if it works.
Oh, and also try searching for "tonquin bean"