Melt two tablespoons of butter in a heavy bottom saucepan and then add the finely diced onion, salt, and gently sauté until translucent.
Add the rice to the saucepan, and stir to coat with butter and the onion. Add the water,
bay leaf, garlic clove, and saffron. Bring the ingredients to a rapid boil and stir to distribute the ingredients evenly. Put the lid on the pan, and then reduce the heat to low. Set a timer for 20 minutes. DO NOT LIFT THE LID. After 20 minutes, turn off the heat and let the rice stand, still covered, for 5 minutes.
Sautee the chopped carrot in a sauté pan with ½ tablespoon of butter and some kosher salt and pepper. Sauté until the pepper is just starting to soften. Do not overcook. Set aside.
Sautee the prepared carrot in a sauté pan with ½ tablespoon of butter and some kosher salt and pepper. Sauté until the pepper is just starting to soften. Do not overcook. Set aside.
Transfer the rice into a large mixing bowl. Remove and discard to the compost bin the garlic clove and bay leaf. Add the cooked vegetables to the rice, and stir in the raw peas (these will cook during the reheat in the microwave), parsley, and scallion.
Store the finished rice in the refrigerator. For reheating: Transfer it to a large microwave-safe container with ample room to toss gently. Heat for 2-minute intervals and stir in between. Repeat until the rice is very hot.