Use
Hold all the chives together in a small bunch. Keep only the firm green leaves, discard the rest.
With a sharp knife, cut the bunch across, starting from the bottom end, as finely as you can. This is the best way to release the flavour and aromas of chives.
It's a rather long operation, but the results are worth it.
Don't do this:
You might be tempted to cut medium sized pieces with scissors, but this is a mistake, because each piece will keep its aromas locked inside.
If you only have scissors rather than a sharp knife, cut the pieces as small as you can.
Chives will flower once established, producing attractive balls of mauve flowers on long stalks.
It's not widely known, but the flowers are well worth using. All you need to do is pull on the petals to break the flower head apart.
These can then be added to dishes such as mixed salad (or any other salad) or certain speciality breads.
They bring a light and very subtle chive flavour, and their lovely colour as well, so do try them!