Put the Earl Grey tea in a large jug. Pour the gin over and stir with a long-handled spoon for about 45 secs.
Strain the gin through a tea strainer over a funnel back into the bottle. You’ll see small particles of leaf still suspended in the gin. Rinse out the jug and, using a coffee filter or some muslin inside the funnel, strain the gin a second time to remove all the particles. In this way, the gin will be stable and the flavour won’t change – it’ll be good for months and months until the final sip.
To serve, shake or stir over ice – I like how the flavours change as the drink dilutes.