Basil seed

When soaked in water the seeds of several basil varieties become gelatinous, and are used in Asian drinks and desserts such as ‘Sirap Selasih’.
http://en.wikipedia.org/wiki/Basil

http://www.dualspecialty.com/thai%20basil%20seeds.JPG
http://www.bunrab.com/dailyfeed/dailyfeed_images_sep-05/daily_sep09_05_basil.jpg