In a Dutch oven, heat 3 tablespoons oil over medium heat and brown onions, garlic, and meat. Add salt, pepper, and turmeric, and sauté for 1 minute. Pour in water—3½ cups/840ml for meat, 2½ cups/600ml for chicken. Cover and simmer over low heat for 1½ hours for meat or 55 minutes for chicken, stirring occasionally.