Step 1: Rinse the rice: Rinse rice in a bowl or fine mesh strainer under cold water until water runs clear, about 1 minute.
Step 2: Toast the rice: Melt the butter in a medium pot over medium heat. Add the rinsed rice and salt and cook until slightly toasted, about 3 minutes.
Step 3: Add liquids and lemon: Pour in the water, lemon zest, and lemon juice. Bring everything to a boil.
Step 4: Simmer the rice: Reduce heat to low, cover, and cook for 15 minutes.
Step 5: Rest the rice: Remove from heat and let it sit covered for 5 to 10 minutes.
Step 6: Finish and serve: Sprinkle in turmeric if using, fluff with a fork, stir gently, and top with parsley before serving.