Tahini is a sesame sed paste that can be difficult to find in most grocery stores, so you may need to visit a natural foods store, gourmet cooking store or farmers market. Typically the tahini is in the health food section or in the ethnic food aisle.
Tahini is a sesame seed paste. It is a recommended protein and can be added to oatmeal. Tahini is often hard to find in a regular grocery store, but check their import aisle, and if they don't have it check your local high-end produce/grocery seller.
Tahini can be found in the ethnic foods section, the dairy section or by the dips and sauces in the refrigerated section of the store. You may also find tahini in the health food or vegan section of your local grocery store.