Prepare the rosemary by mincing it very thin, then set aside.
Zest the lemon zest, hen set aside.
Grate the cheese, then set aside.
Add the butter to a small saucepan and heat on low.
Add the rosemary to the butter.
Heat the oil on medium/high heat
Add in 2-3 popcorn kernels
Place the lid on the pan. When those first kernels pop, the oil is ready for you to add the rest.
Wearing your oven mitts move the pot around by lifting it off the direct heat and by making back and forth motions so that the kernels keep moving until you have popped the entire pan.
Once the popping slows to 3-4 over few second you can turn off the heat and let it sit for another minute. Carefully lift the lid
Pour into a large brown paper bag or bowl
Add in the cheese, salt, and lemon zest.
Add to your serving bowl (or if you are taking the bag of popcorn you can add slowly the rosemary butter to the bag and shake)
Slowly add the butter-rosemary sauce to the popcorn.
Turn the popcorn over several times with a plastic serving spoon
Eat it while it's warm Enjoy!