Back in England, it would be a nice pint of Theakstons Best, Blacksheep, or a well kept pint of John Smiths, on hand pull, (not that awful John Smiths Smooth, a supposedly universal beer, that reminds me of Watneys Red Barrel of years gone by).
In Thailand I enjoy Chang, Tiger and surprisingly the new Archa beer.
And there is nothing wrong with a nice gin and tonic in a large glass with plenty of ice and a good squeeze of lime!