Falafel with kumara hummus

Name: Falafel with kumara hummus
Ingredients: 1 small kumara (orange sweet potato) (250g), chopped coarsely; 400 gram (12½ ounces) canned chickpeas (garbanzo beans),rinsed, drained; 2 tablespoon tahini; 2 clove garlic, chopped coarsely; 1/4 cup (60ml) lemon juice; 1/4 cup (60ml) water; 800 gram (1½ pounds) canned chickpeas (garbanzo beans), rinsed, drained; 4 green onions (scallions), chopped coarsely; 1/2 cup (60g) frozen peas, thawed; 2 teaspoon ground cumin; 2 teaspoon ground coriander; 1/4 cup (40g) wholemeal spelt flour; 2 egg whites; 2 teaspoon bicarbonate of (baking) soda