Coconut liquor or coconut vinegar or white-wine vinegar

Feni/Sirka

4.9 g1 teaspoon

15 g1 tablespoon

Density about 1.0 g/ml; 1 tsp = 4.93 ml.

Instead of Coconut liquor or coconut vinegar or white-wine vinegar

No single substitute covers both the spirit and vinegar roles; choose by what the recipe is using it for.

White wine vinegar
Use the same weight if the recipe needs acidity; it is sharper and has no coconut or spirit flavour.
Coconut vinegar
Use the same weight; it is softer and slightly sweet, closest to the vinegar option.
Brandy or rum
Use 75% of the weight only if the recipe wants the feni spirit; add vinegar or lime separately for sourness.