The cuisine of Hue forms the heart of Central Vietnamese cuisine, but one of the most striking differences is the prominence of vegetarianism in the city. Several all-vegetarian restaurants are scattered in various corners of the city to serve the locals who have a strong tradition of eating a vegetarian meal twice a month, as part of their Buddhist beliefs. Another feature of Hue dishes that sets them apart from other regional cuisines in Vietnam is the relatively small serving size with refined presentation, a vestige of its royal cuisine. Hue cuisine is notable for often being very spicy.