McCormick Sesame Seed Spice in Bulk at .com. Sesame seed is the clean, dried seed of Sesamum indicum L. The slightly hard, flat, oval, small, smooth and shiny, dehulled, creamy-white seeds have a nutlike odor and an agreeable nutty taste. The sesame seed plant is an annual herb having an oblong shaped pod, containing the small, creamy-white seeds, varying in size up to 3.5 mm (1/8 inch) 18 oz.. Container