FISH

The easiest dish to prepare = FISH
(clean the fish, dry it, and fry until golden brown... then... done)

The most troublesome dish after cooked = FISH
(the oil was everywhere, the whole place was so smelly, need to clean the cook-top, EVERYTHING!!)

@kok: luckily you don't eat fish, then you don't have to consider it as your dishes. :)

I have to learn to steam fish from now on. But before that, I need to buy a bigger pot.