Boozy tea: Queen of Teaba

I played around recently with some vintage 1920s cocktails, including one called a Queen of Sheba:

50 ml / 2 fl oz Sloe gin
50 ml / 2 fl oz Passionfruit juice
2.5 TSP Grenadine
2.5 TSP Lime juice
Champagne or Ginger Ale (because I forgot to buy champagne)

Pour gin, juices, grenadine and ice into cocktail shaker.  Shake and pour into chilled glass.  Top off with champagne or ginger ale for the bubbles.

This cocktail does quite well when mixed half-and-half with a berry-based tea.  We used Twinings' Wild Berries herbal, which is tasty without adding sweetness (a Queen of Sheba really doesn't need *more* sweetness).    I suspect Celestial Seasonings' Wild Berry Zinger would do well, although slightly sweeter.