Select your substitute based on the dish: green onion for all uses, chives or celery for raw dishes, and leek greens, shallots, or onion for cooking.
Prepare the substitute by finely chopping, slicing thin, or mixing blends as needed.
Apply the substitute amount according to the recommended ratio for each ingredient.
In cooked dishes, add ingredients like leek greens or onions early to soften; add chives at the end or use raw in garnishes.
Taste and adjust seasoning as needed to balance flavor and texture.