You could also explore the history of various "smoking" techniques and why they developed. IE - Indians would set up wood frames leaning over open fire pits to smoke jerky on to preserve it for travel. Many of the now popular cuts of meat that we smoke used to be cast off's given to the slaves in the south and they discovered that by cooking them low and slow you turned a tough piece of meat into something highly desireable - ribs are an example of that. How has smoking & BBQ impacted the meat industry? What are various types of smoking done around the world today and how are the different?
All just some ideas off the top of my head if you find you need "filler" for your report.