Preparation

• Rinse the lentils with cold water and drain. Combine the lentils, bay leaf, and 1 tsp.  salt in a medium saucepan. Add enough water to cover by 4 inches and bring to a simmer over medium-high heat. Reduce the heat to medium-low and simmer gently until the lentils are tender and falling apart, about 10 minutes. Drain the lentils in a fine-mesh sieve. Discard the bay leaf and let the lentils cool for 10 minutes in the sieve.
• Transfer the lentils to a food processor and add the lemon juice, tomato paste, garlic, cilantro, harissa, cumin, and olive oil. Blend until smooth, stopping once or twice to scrape down the sides of the bowl.
• Season the dip with salt, if desired, and transfer it to a serving bowl. Allow the dip to stand for at least 1 hour before serving to allow the flavors to develop.

  

Make Ahead Tips

The cooled dip can be stored in the refrigerator in an airtight container for up to 1 week.