Put the rice in a metal strainer or colander and rinse under cold water. Drain well.
In a saucepan over medium-high heat melt the butter.
Stir in the turmeric, garlic powder and salt and mix until blended with the butter. Then stir in the rinsed rice. Cook for 1 or 2 minutes, stirring constantly, to toast the rice a bit.
Add the water and lemon juice to the saucepan and bring to a boil. Reduce heat to low or medium-low (you want the rice to be gently simmering) and cover the pan.
Allow the rice to cook until the water is absorbed, about 15 minutes.
Keep the pan covered and remove it from the heat. Allow the rice to sit for 2-3 more minutes.
Take the lid off the pan and fluff the rice with a fork. Stir in chopped fresh cilantro if desired. Serve immediately.