Add 1.5 oz. chilled chamomile tea, 1.5 part fresh pressed mandarin juice, 0.5 oz. elderberry syrup, and half a dropper of Bittermens Elemakule Tiki Bitters (or a pinch of nutmeg & cardamom) to a shaker with ice and an egg white, or 0.75 oz. of aquafaba. Shake well without ice to fizz it up, then add ice to your shaker, and shake gently to chill. Strain into a cocktail glass. Garnish with chamomile blossoms or any of your favorite edible spring blossoms.
Optionally spike your Immunitea-ni with 1.5 oz of your favorite spirits... because we know you want to.