For the Italian wine grape also known as Castelli Romani, see Trebbiano.
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The area of the castles occupies a fertile volcanic area which has allowed since ancient times a flourishing agriculture. The former crater is occupied by two lakes, the Lake Nemi and that of Albano.
Ariccia is celebrated for its porchetta (roasted pork meat). Local sweets include maritozzi, a kind of sweet bun. From the harvest of wine grapes, wine must is used to bake ciambelle al mosto a large donut-shaped flat cake which can be found in the local bakeries.