Super Salt
Ingredients (by weight)
40 parts distilled (or at least filtered) water
9 parts salt (non-iodized)
1 part MSG
0.1 parts disodium inosinate and disodium guanylate (aka E635)
Directions
Bring the water to a boil, then remove from heat.
Mix in the minerals and stir until they all dissolve.
Put the water in a shallow non-reactive (ie, non-metal) dish.
Leave to evaporate.
Notes
Example: 200g water; 45g salt; 5g MSG; 0.5g E635
Coarse salt takes a long time to dissolve, consider grinding it.
Using tap water can cause a powdery calcium build-up over the salt flakes, or if the water has dissolved minerals they can impart off flavors to the salt.
Super salt brand names: Ajinomoto (Japan)
Slower drying times should yield larger crystals.