Compound butter is a versatile culinary ingredient consisting of butter that has been mixed or "compounded" with various flavorings, herbs, spices, or other ingredients.
In a small bowl, mix together the butter and salt, and add in the herbs, and garlic.
Once combined, wrap the butter mixture in a piece of plastic wrap or parchment paper. Roll the butter into a log, twist the ends, and put it in the refrigerator
Once the compound butter has firmed up, slice it for use in recipes, like garlic bread, or in a batch of steamed rice or buttered noodles.
Wrap leftovers in plastic wrap and place them in the fridge or freezer for up to three months.