Spiced Split Mung Beans with Yogurt (Moong Dal Tarka)

Ingredients

• 1/2 Pound Split Mung Beans
• 1 Pound New Potatoes, halved or quartered (depending on size)
• 3 Tablespoons Butter
• 1 Onion, minced
• 1 (1-Inch) Piece Ginger, grated
• 1 Teaspoon Ground Coriander
• 1 Teaspoon Ground Turmeric
• 1 Teaspoon Ground Cumin
• 1 Serrano Chile, minced
• 1 Tomato, cored and chopped
• 1 1/4 Cups Plain Yogurt
• 1/4 Teaspoon Ground Mace
• 1/4 Bunch Fresh Cilantro, chopped