settingsalt
nounUK /ˈsɛtɪŋ sɔːlt/
US /ˈsɛtɪŋ sɔlt/
A special kind of salt used to help set things like cheese or soap.
The cheese maker added settingsalt to the milk so it would turn into cheese.
OTHER MEANINGS
2. Salt used in soap making to make the soap harden.
She stirred settingsalt into the soap mixture to make it firm.
3. A salt that helps a liquid turn into a solid.
The settingsalt made the liquid thicken into a gel.
4. A mineral mix used to fix colors in dye.
The dyer used settingsalt to keep the bright colors from washing out.