Vetiver essence

Khus essence

4.9 g1 teaspoon

15 g1 tablespoon

Water-like density about 1.0 g/ml; 4.93 ml ≈ 4.9 g.

Instead of Vetiver essence

Nothing truly matches vetiver's woody-cool note; kewra water is the closest common option.

Screwpine water
Use 5-10 times the weight, added off the heat. Floral but not woody; taste before adding more.
Rosewater
Use 5-10 times the weight, off the heat. Rosy and softer than khus.
Rose syrup
Use 3-5 times the weight and reduce sugar. Sweet and floral, not earthy.