In a mason jar or bowl, combine the Dijon mustard, minced garlic, vinegar, and mayo. Whisk or shake well. Add a dash of salt and some freshly ground black pepper, to taste.
Bring chicken stock with bay leaf to a boil on high heat. Add the rice, lower to medium-high heat and simmer for 40-45 minutes. Once the rice is cooked, add lemon juice, lime juice and cilantro. Mix well.
Bring the stock to a boil in a pot over high heat. Add the rice, reduce to medium hight heat, and simmer for 40 minutes or until the rice is tender and all the stock is absorbed.
Preheat oven to 350°F. Cut squash in half lengthwise, remove seeds and pulp. Place squash face down on baking tray and bake for 45 minutes or until you can easily pierce the flesh with a knife. When cool enough to handle, pull strands of squash apart with fork. Refrigerate until ready to use.