In a blender or food processor, combine garlic, olive oil, sesame seeds, tahini, lemon juice, and garbanzo beans (reserve about a tablespoon of beans for garnish). Blend, adding reserved garbanzo-bean liquid if needed until hummus reaches desired consistency. Season with salt and pepper.
Transfer the mixture to a medium serving bowl. Garnish in the middle with reserved garbanzo beans. Sprinkle orange and lemon peel around the beans. Chill in the refrigerator, tightly covered, until ready to serve.
One of the best homemade hummus recipes I've tried - the orange is a refreshing change from standard hummus. Very addictive!! I didn't add any garnish because frankly, I'm not Martha Stewart.