Prepare artichokes for cooking by removing all but 1/4 inch or so of the stem, and (optionally) cutting away about a quarter of each scale with scissors. This removes the thorns that can interfere with handling the leaves when eating.
Boil or steam trimmed artichokes until tender, about 15 to 45 minutes. If boiling, salt can be added to the water, if desired. It may be preferable not to cover the pot while the artichokes are being boiled so that the acids will boil out into the air.