If you happen to settle into a Bistro One bar chair for a happy hour drink, you're likely to skip over the restaurant's signature elderflower-accented fleur-de-lis cocktail in favor of something stiffer. But if you wake up early on Saturday or Sunday and head over to the cool South Broadway bistro, the effervescent cocktail--St. Germain liqueur, vodka, and fresh squeezed grapefruit juice--has much more appeal. The syrupy liqueur perfumes the sweet-tart juice, and one sip is like breathing in spring lilacs. 1294 S. Broadway, 720-974-0602