Almost every day we have a lovely tea-break with Taeko-San. Yesterday she showed us how to make matcha in the traditional way: put some powder at the bottom of the bowl, add water - the water has to be the right (low) temperature - and then whisk to get a light froth. If you have snacks, first eat the sweet (we had cake) and then drink the matcha in two or three gulps.
The bowl and its decoration also factor into the process: hold the bowl in your left hand from the bottom. The decoration (in my case a blotch of glaze, in the image above the indent in the bowl) should face you, you being six o'clock. Then look at the decoration and rotate the cup with your right hand three shifts so that the decoration has made almost a full rotation and it ends at maybe three or four o'clock. Then drink the tea (it is not correct to drink the tea while the decoration faces you). Then rotate the cup back to six o'clock, appreciate the bowl and its beautiful art and place it down.