- Black till are rich in dietary fiber and have a cholesterol-lowering effect. Black sesame seeds are rich in phytosterols. These seeds offer the highest phytosterol content (400 to 413 mg per 100 grams or 3.5 ounces) of all nuts and seeds. Black Till is very low in Cholesterol and Sodium. It is also a good source of Calcium, Iron, Magnesium and Phosphorus.