Ingredients for mixing at 30,000 ft:
2oz Orange Vanilla Syrup bottle (Royal Rose is TSA carry on friendly in this size)
Soda or Seltzer Water
A Lime if you can get it!
Mix to taste, we recommend starting with 1/2 oz of Orange Vanilla simple syrup, 1 1/2 oz of your choice Gin, Ice and a dash of seltzer or soda water. If limes are available, garnish at will!