…also, if you have no orange, four drops of orange bitters works really well.

Rather than orange zest, a sprig of rosemary works really well as a garnish.

Skip the sugar syrup (as is so often the case, it’s utterly unnecessary).
Tastes best when cool rather than super cold directly from the shaker - the ginger wakes up and comes to the fore as it warms slightly (think fridge cool).

This can be improved by using Sir Robin of Locksley gin (which has elderflower in its botanicals and goes very well with a pink grapefruit garnish in a G&T).

Brings all the flavours together in a slightly smoother manner.

We call this “The Sir Robin of Beverly Hills”.