Bring a small pot of water to a boil. Add a teaspoon of salt, and drop the garlic scapes in. Leave them in for about 30 seconds. Try one to see if they are tender to your taste.
If you have maesilcheong (Korean plum syrup), it’s nice for this dish. Use about a tablespoon or to taste. The fruity sweetness and acidity works well with this garlicky vegetable.