This thick, rich paste made from sesame seeds is similar in color and texture to peanut butter. It is imported, and can be found in bottles in Chinese markets. It will keep fairly well even after it is opened, and does not need refrigeration. It will, however, separate if it stands for any length of time, with the oil rising to the top and the thicker part of the paste settling to the bottom. Make sure to stir it up thoroughly before you use it.
Middle Eastern sesame paste, or tahini, is only a moderately good substitute. It is thinner, milder, and less aromatic than the Chinese variety. Use it only if you have no other alternative.