Place the 2 Tbsp. of boiling water in a small dish, then place the pinch of saffron threads in the water, stir in with your finger and let soak for 10 minutes. (I chop my chives and celery and start the cooking while the saffron soaks).
Heat the oil in a medium-sized saucepan over medium-high heat and once heated, add the celery and chives and cook, stirring frequently, until celery has softened and turned slightly brown.
Add in the rice, broth, salt, parsley flakes and the saffron threads/hot water combination (make sure to get all the saffron in there) and heat until the mixture just starts to boil.
Once it starts to boil, immediately cover the pan and reduce heat to low.
Cook covered over low heat for 15 minutes (do not take the lid off at all while cooking). When done, stir the rice to incorporate the saffron more (the more it incorporates, the more yellow the rice becomes), then fluff with a fork and garnish with some additional dried (or fresh) parsley, if desired.
Serve as a side dish to accompany your favorite meat or fish, or throw some chopped up cooked chicken in to turn it into a meal!