If you like cinnamon, you might like this. First, muddle a small cinnamon stick (they are very strong in aroma, an inch is more than enough) in your mixing glass. Pour half an ounce of fresh lime juice and three fourths of an ounce of honey syrup of honey liqueur (like Barenajager) and muddle it a little more. Pour ice and two ounces of rum and shake it. Pour into a coupe and top it off with champagne. Gently stir it and serve.