Clean the jar: Wash and dry a glass jar thoroughly. Make sure it has a tight-fitting non-metal lid.
Fill with salt: Add pink Himalayan salt to fill about one-third of the jar.
Add water: Pour filtered water over the salt until the jar is nearly full, leaving about 1 inch of headspace.
Stir and sit: Stir with a non-metal spoon, then cover.
Let it sit for 12–24 hours so the salt can dissolve and the solution can saturate.
Check for saturation: If some salt crystals remain on the bottom after 24 hours, the solution is saturated and ready. If all the salt dissolved, add more salt, stir, and wait another few hours until crystals remain.
Use your sole: Start with 1/2 to 1 teaspoon of sole in a large glass (12–16 oz) of water once per day. Taste and adjust.
You’re aiming for pleasantly salty, not briny.
Replenish as needed: When the salt crystals disappear, add more salt and a splash of water to maintain saturation.