
Hibiscus liqueur is a floral liqueur flavored with the deep-red calyces of the hibiscus (sorrel) flower.
Homemade hibiscus liqueur
Mix one part hibiscus syrup, three parts vodka and two parts water. Use in the same amount. It gets close to bottled liqueurs.
Sorrel-style liqueurs
Sorel or another liqueur modeled on the Caribbean drink fits at the same measure but adds clove, cassia and ginger.
Matches the red and the tartness but brings no alcohol and no floral note. In the same amount it gives a weaker, sharper cocktail, so add a little syrup.
Hibiscus syrup
On its own it makes the cocktail weaker and much sweeter.
Hibiscus color is anthocyanin, so it responds to acid and to time. The red pales as the bottle ages, and pales further in a drink that is not acidic. Refrigerate after opening if the color matters.