My gin riff on the Navy Grog merging elements from Trader Vic's and Don the Beachcomber's Grog recipes. The gin pennant is a flag flown aboard ship that indicates an open invitation to other ships' officers to come aboard for drinks.
2 oz London Dry Gin
3/4 oz Honey Syrup
1/4 oz Allspice Dram
3/4 oz Lime Juice
3/4 oz Grapefruit Juice
Shake with ice, add 1 oz soda water to the shaker tin, strain into a Mai Tai or double old fashioned glass with a Navy Grog ice cone (with straw hole), and add a straw and a lime-toothpick gin pennant flag to the ice cone. At work, I garnish with a lime twist flag on a pick inserted through a cherry and citrus slice.
Note: the drink was originally created with equal parts honey syrup and allspice dram, but I later changed that to the 3:1 ratio listed above.