Prep the lemon and garlic: Zest the lemon first, then juice it.
Start with 2 tablespoons of juice. Peel the garlic and roughly chop it.
Load the blender or processor: Add the beans, lemon zest, lemon juice, garlic, 3 tablespoons olive oil, 1/2 teaspoon salt, and a few grinds of pepper. If using, add tahini or Greek yogurt and the cumin.
Blend until smooth: Process on high, pausing to scrape the sides.
If it’s thick or pasty, add 1 to 3 tablespoons of cold water, 1 tablespoon at a time, until you reach a creamy, spreadable consistency.
Taste and adjust: Add more lemon juice for brightness, more salt for balance, or olive oil for richness. If the garlic feels strong, let the dip rest 10 minutes; the flavor will mellow.
Plate and finish: Spoon into a shallow bowl. Make a few swirls with the back of a spoon and drizzle with a little olive oil.
Garnish with chopped herbs and a pinch of red pepper flakes if you like.
Serve: Pair with pita chips, toasted bread, sliced cucumbers, bell peppers, cherry tomatoes, or grilled meats and fish. It also makes a great spread for sandwiches and wraps.