In order to prepare Compound Butters, you will need the following: butter, blackberries, lemon, fresh dill, potato masher, 2 bowls, a fork, and waxed paper. Place blackberries and butter in a bowl. Mash them with a potato masher. Set aside. Zest one lemon. Chop fresh dill. Place butter, the chopped dill, and the lemon zest in a separate bowl. Combine them. Mash them together with a fork. Place on wax paper. Place the blueberry butter on wax paper, roll it up, and freeze it. Repeat with the lemon butter. Store it in the freezer until you need it. This can be used in numerous ways: atop meats, fish, potatoes, etc.