In another thread, a poster mentioned a tahini sauce to go with a middle-eastern themed meal. Curious, I googled a recipe, then the ingredient itself.
A paste made from ground sesame seeds, the major ingredient used in hummus. Most used in the Middle East. Tahini may be purchased in cans, jars, fresh or dehydrated. Tahini comes in two varieties; hulled and Unhulled. Unhulled tahini is very bitter. Tahini is sometimes used to replace peanut butter on bread. In the Middle East tahini is used in a variety of dishes, and is often mixed with lemon juice, salt and garlic. May be thinned out to make a sauce. It is a main ingredient in soups. You can make your own tahini by using a blender and mixing white sesame seeds with peanut oil until creamy.
Substitutions: sesame butter OR 3 parts creamy peanut butter and 1 part sesame oil, OR toasted sesame seeds (for hummus) , OR toasted sesame oil (for hummus) OR peanut butter (for sauces).
Now, since I had no idea what it was to begin with, maybe this is a dumb question, but is there really not a significant difference between tahini and peanut butter? Maybe I'm just reading the above quote wrong, but when I think "hummus," I definitely don't think "peanut butter."