Plugs are easy to use and convenient to store. Pellets are pulverized whole hops. Since they re so finely ground, they don t need to be strained after boiling. They will settle out with the yeast after fermenting. Pellets are probably the easiest form to work with.
Hops come in many different varieties from many different countries.
Each variety has it s own unique flavor, and aroma. Each also has it s own usage. Certain varieties add bitterness. They are added early in the boil. Each different combination of amount of hops, boil time, and variety of hops will have a different effect on your beer, making your beer uniquely yours.