Toast the sesame seeds by placing the frying pan on medium heat. When the pan gets warm, add sesame seeds and saute them until they get pale gold color. Be careful not to over-toast them, because they will give a bitter taste. You can buy already toasted sesame seeds in the shop. If you are using them, then skip this step.
In the blender add fried sesame seeds, salt, and olive oil. Blend it. If it is necessary, add more olive oil.