
Celery stick is a length of the crunchy edible leaf-stalk of celery, Apium graveolens, cut into a spear and used as an edible garnish.
Mild and faintly savoury, with a slightly bitter vegetal note and a clean, watery crunch.
A single stalk cut to length serves as an upright edible garnish and a sturdy stirrer, adding a green visual accent and a faint savoury aroma at the rim while contributing essentially nothing to the drink's liquid balance.
Any fresh, upright, edible green garnish that gives comparable visual lift, though the specific savoury celery note and the rigid edible-stirrer function are hard to reproduce; a herb sprig such as mint matches the fresh-green presentation but not the crunch or the celery aroma.
Cut fresh to length from the thick, fibrous leaf-stalk (petiole) of stalk-celery, a marshland plant in the family Apiaceae, it is used raw with no processing, fermentation or distillation. The stalk carries a very high water content and a firm, crunchy texture.
As fresh produce it wilts and loses crispness once cut; keep it cold and use it fresh.