Make thyme simple syrup by heating water to a simmer on medium heat in a small saucepan. When water starts to boil, turn off heat and add sugar, whisking until the sugar dissolves. Add sprigs of rinsed thyme, stir, and set aside to cool. Preheat oven to high on broil. Slice mandarins thinly and spread out on baking sheet. Sprinkle with coconut sugar. Place in oven and broil until charred, about 15 minutes. Remove from oven and allow to cool. In cocktail shaker, add ice cubes and then pour in 3 oz.Hangar 1 Mandarin Blossom Vodka, 3/4 oz thyme simple syrup and 4 drops bitters. Shake vigorously and pour. Garnish with thyme sprig and charred mandarin. Serve immediately.