Soak your rice for 15 minutes if desired, and then rinse under a tap (in a sieve) until the water runs clear.
In a medium pot, bring 500 ml water, (2 cups) 3/4 tsp salt, 1 tsp turmeric to a boil.
Add the rice, raisins, cinnamon and cover with a tight-fitting lid and boil over medium heat for 5 minutes without lifting the lid.
Turn off the heat and let the rice sit covered for 25 minutes to absorb the liquid fully.
Remove the cinnamon stick, add the butter and fluff gently with a fork, and serve.
Note: If any water remains after the rest period, place the pot back on low heat, uncovered for a few minutes to allow excess moisture to steam off.