Salt, any salt! my kingdom for some salt.
What is Salt? Common salt, or sodium chloride, is the chemical compound NaCl. Salt occurs naturally in many parts of the world as the mineral halite and as mixed evaporites in salt lakes and salt oceans. Salt varies in color from colorless, when pure, to white, gray or brownish, typical of rock salt (halite).
Source: What is Salt? | SaltWorks