2 large artichokes (about 12 to 16 oz each) is a good amount to be shared by 4 people as a side dish. Alternatively, you can serve one artichoke per person, but aim to get smaller artichokes around 8 to 10 oz each. Try to get artichokes of a similar size so that they finish cooking at the same time, and use the guide in the recipe above to determine how long to steam / pressure cook the artichokes.