Flavored salts recipes ?
Vanilla. You can just stick a scraped-out vanilla pod in the salt for a few weeks, but it won't show. If you want to pack it into clear jars, use sea salt and add some powdered vanilla.
Citrus peel. I mix grated citrus peel with rough sea salt, let dry and grind in a mortar. My mother peels lemons and lets the rind dry and then pulverizes it in a coffee grinder to mix with salt or use as is.
I just gave lovage salt for a gift. (I know this is not a practical idea because noone has lovage plants. Nonetheless . . . . )
I had made some in the summer with lovage flower heads and leaves. But noticed at the end of the season that the dried stalks are really strongly scented. So I made a batch with some dried stalks and sea salt. Think it will be nicely flavored. Like celery, anise, maybe lemon. Just like lovage tastes.