1 small onion, chopped
3 to 4 garlic cloves, finely minced
½ jalapeño, finely chopped
1 (1-inch) piece fresh ginger, peeled and grated
1 tablespoon curry powder
1½ teaspoons garam masala
½ teaspoon turmeric (optional)
4 cups low-sodium vegetable broth
3 cups peeled and chopped sweet potatoes (about 2 medium)
1½ cups yellow lentils (toor dal), rinsed and picked through
¾ cup plain vegan yogurt
Juice of ½ lime
1 bunch Swiss chard, center stems removed, leaves roughly chopped
1 teaspoon black salt (kala namak) or sea salt
Freshly ground black pepper