Indian-Spiced Sauteed Vegetables

Ingredients

• 2 tablespoons olive oil
• 1/2 teaspoon cumin seeds
• 1/2 teaspoon brown mustard seeds
• 1/2 onion, diced
• 1 bunch chard, leaves roughly chopped
• 3 carrots or 3 to 4 potatoes, scrubbed and diced
• 3/4 teaspoon ground turmeric
• Salt and freshly ground pepper
• Squeeze of lemon juice (optional)
• Plain yogurt or Greek yogurt, preferably full-fat (optional)