In a spice grinder blend black peppercorns and salt until finely ground.
In a pot over medium heat combine ground black pepper and salt, lemon juice, sugar, and turmeric root. Bring up to 190F and remove from heat. Submerge in an ice bath to cool completely.
Transfer cooled mixture to a blender and blend for 1 minute. Strain through fine-mesh sieve, discarding solids. Hold refrigerated for service.