Toast sesame seeds on low heat in a skillet for 10-15 minutes until seeds are toasted, stirring often, careful not to burn them.
Let sesame seeds cool for about 10-15 minutes before putting in food processor.
When ready add sesame seeds to food processor and drizzle 3 tbsp. of olive oil to get it started. As it's processing, drizzle in more olive oil until it comes together in a liquid paste. Not too thin or too thick.
This can be covered and refrigerated for a few weeks.