Heat the pressure to saute the butter and add the anchovy paste.
Add the shallots and saute for one minute. Add the rest of the ingredients to the pot.
Place the lid on the unit and turn to locked position.
Turn the steam release valve to sealing.
Press the manual button and adjust the time for 25 minutes.
When the unit has finished cooking and the timer has counted to zero, carefully release the steam.
Remove the lid, take out the bay leave and other herb stems and discard.
Stir and serve hot.
*See note below for alternative cooking methods.