Fortnum & Mason is now selling 'beautiful, ceremonial grade green tea' online. Check out their website for tips on how to make a perfect matcha tea, step by step. Don't let the pictures put you off - you don't really need all that paraphernalia for making Japanese tea, nor in such exacting detail ('bring approximately 40ml of freshly drawn water to 75 degree Celsius'), and given the health benefits of green tea, you might be tempted to give it a go. It'll make a nice change from your regular English Breakfast or Earl Grey.