Single malt whisky

4.6 g1 teaspoon

14 g1 tablespoon

0.1 g1 drop (about 0.05 ml)

One drop ≈0.05 ml; whisky density ≈0.94 g/ml.

Instead of Single malt whisky

Bourbon
Use the same weight or volume. Sweeter, with vanilla and oak; good in creamy or meat dishes.
Brandy or rum
Use the same weight or volume. Brandy is fruitier, rum sweeter; both change the aroma.
Vodka
Use the same weight or volume. Adds alcohol but little flavour; increase any other flavouring slightly.