How do I adjust sweetness without hiding the celery and ginger flavour?

Expanded Explanation

Sweetness should support the green and spicy notes, not cover them. In this style of liqueur, white sugar gives structure and clarity, while honey adds softness and length. If the drink tastes sharp after straining, add sweetness in very small stages, because celery's delicate freshness can disappear quickly once the syrup level rises too far.

The best method is to dissolve extra sugar or honey separately and add it gradually, tasting between additions. This gives better control than dumping more sweetener straight into the bottle. If the liqueur already has enough body but feels a little aggressive, a tiny increase in honey may help more than adding a large amount of sugar.

Always judge the balance after a short rest, not immediately after stirring in sweetener. Freshly mixed sugar can make the liqueur seem rounder than it will taste a few days later. A well-balanced version should keep celery visible on the nose, ginger gentle in the middle, and sweetness only smoothing the finish.