In a large food processor bowl, place black beans, chickpeas, garlic, tahini, lemon juice, olive oil, cumin and salt. Pulse until combined.

While motor is running, add water until consistency is just smooth. (You can also add additional olive oil and/or lemon juice). Process for a full three minutes more to reach a very smooth consistency. Check to see if it needs more olive oil, lemon juice and/or salt – process until well combined. (Total combined processing time is about four minutes.)

Refrigerate until ready to serve, bring to room temperature before serving. Serve with tortilla chips and/or fresh vegetables.