Soda ash

 is one of the ingredients needed to Craft glass. can be obtained by cooking seaweed on a range. Seaweed is obtained from spawns on Entrana or through Big Net Fishing. To make molten glass, use the sand on a furnace with soda ash in your inventory. The molten glass can then be blown with a glassblowing pipe to create one of the following:
 * Beer glass
 * Vial
 * Glass orb