FYI there are two types of coriander seed:
1) indian light green, football shaped, lemony taste - better choice and used in brewing Hoegaarden from the Thirsty Traveler TV series.
2) western brown, round, soapy taste
Make a tea from crushed indian coriander seeds then add the liquid only to control the flavor impact. Can add more tea to taste just before bottling and/or citrus extract. Once made an overly strong western coriander flavored beer by adding the crushed brown seeds directly. Had to call it coriander beer for the masses to drink.