Add all the ingredients to a small bowl, stir together, and store in an airtight jar.
For the citrus blends
Mix the fresh zest into the salt, then spread it on a parchment-lined baking sheet.
Dry in a 200°F oven for 15 to 20 minutes (or air-dry overnight), stirring once or twice, until the zest is completely dry.
Let it cool, break up any clumps, and store in an airtight jar.
Notes
Make sure the citrus blends are fully dried before storing so they stay shelf-stable.Store in airtight jars in a cool, dry place for up to a year.Use coarse sea salt or pink Himalayan salt; fine table salt goes powdery.