In a mortar and pestle, grind the coriander seed, black peppercorn and salt
Add the minced garlic and grated lemon peel and make a paste
Combine the softened butter, minced garlic, grated lemon peel, and the chopped assortment of herbs to the spiced garlic paste
Gently blend everything together until well incorporated, allowing the flavors to meld harmoniously
Lay out a sheet of plastic wrap and transfer the butter mixture onto it
Roll it tightly, forming a compact log with the plastic wrap
Twist the ends of the plastic wrap to secure the shape, then refrigerate the compound butter for at least an hour to allow it to firm and flavors to develop