Once opened the jar, try to keep covered the anchovies with salt and their own liquid. If you keep them in the fridge, you can extend your intake until to 2 years.
1.- Always under running water, gently desalinate and clean the outside of the anchovies.
2.- Remove the main spine.
3.- Open the anchovies along the spine and divide them into 2 filets.
4.- Remove the side spines in order to heave the fillets completely clean (you can leave the fillets joined by the tail).
5.- Once we have the anchovies cleaned, dip in water about 10 minutes; let drain for a while and then put them on a tray and cover them with olive oil.
They can be eaten immediately or keep them before in the fridge a few days.