Place drained chickpeas in a food processor and blend until coarsely ground. Scrape down the bowl and add tahini, salt, lemon juice, and Hedessent flavourings.
Blend again, scraping down the bowl. If hummus is too thick, add ⅛ cup water at a time until desired consistency (you shouldn’t need more than ½ cup water), and blend for at least 2 minutes to make a very smooth mixture.
Decant into bowl and top with olive oil. Refrigerate.