To say that Hong Kong is keen on eating would be the understatement of the millennium. So where does breakfast fit in? Traditionally, and from a Chinese point of view, it's not so much a time to ingest large amounts of food as an opportunity to meet friends and associates, chat and swap a few tidbits of information, browse the newspapers (whether dead-tree or LCD) and take stock generally, with a dim sum restaurant like Luk Yu being an ideal spot.
For anyone with a bit more of an appetite, somewhere like Cafe Too is irresistible. It's not so much the vast array that's laid out on the buffet with more than a little artistry, as the chefs at work frying, boiling, chopping and generally cooking up a storm just feet away from the dining tables that make this such an exciting place to break fast. Note that all the main hotels in Hong Kong run a pretty sensational breakfast buffet.
Alternatively, it's fun to duck into somewhere like Classified, where the other customers will mainly be in suits if it's a weekday; and while it bills itself as a cheese room, there's plenty of items like home-made muesli and scrambled eggs on sourdough toast: plus a Bloody Mary if the occasion warrants.