Here is a posh translation
Hello my friend [mate], I am currently working in the United States, but goodness, what a surprising culture shock I experienced when I realised that you don't have a nice cup of tea with your eleven o'clock break?!. I was also shocked [was in a right state] when I tried your desserts: no puddings, no custard, no scones, and no clotted cream!.
Hope this helps