1.
Place the softened butter into a medium bowl.
2.
Add the lemon zest, parsley, garlic, and sea salt.
3.
Using the back of a spoon, mash together the ingredients. Then stir to get even distribution.
4.
Lay out a square of parchment paper or waxed paper. Spoon the butter mixture into the center.
5.
Roll the waxed paper or parchment paper into a log shape, gently patting the butter into an even log. If desired, you can shape the butter into a squared-off shape or another decorative shape.
6.
Refrigerate the butter for at least 30 minutes to harden before serving.
7.
When ready to use, unwrap the roll and slice. Store any leftover butter in an airtight container or resealable bag, but remember: you must use or freeze the butter within one week.