Combine garlic, chickpeas, beet, tahini, 2 tablespoons lemon juice, water, salt, and cumin in a food processor, reserving some chickpeas and beets for garnish if desired.
Puree until smooth.
Taste for seasoning.
In a separate bowl, combine yogurt and remaining lemon juice.
Whisk until smooth and season to taste with salt.
Transfer hummus to a serving bowl and garnish with the lemony yogurt, a drizzle of olive oil, mint leaves and some reserved chickpeas and beets.
Serve alongside blue potato, pita chips or crudites.