Zest (ingredient)

Zest is a food ingredient that is prepared by scraping or cutting from the outer, colorful skin of citrus fruits such as lemon, orange, citron, and lime. Zest is used to add flavor ("zest") to foods.

In terms of fruit anatomy, zest is obtained from the flavedo (exocarp). The flavedo and white pith (albedo) of a citrus fruit together makes up its peel. The amounts of both flavedo and pith are variable among citrus fruits, and may be adjusted by the manner in which they are prepared. Citrus peel may be used fresh, dried, candied, or pickled in salt.

Crème brûlée

Crème brûlée ( /ˌkrɛm bruːˈleɪ/; French pronunciation: [kʁɛm bʁyle]), also known as burnt cream, crema catalana, or Trinity cream is a dessert consisting of a rich custard base topped with a contrasting layer of hard caramel. It is normally served cold.

The custard base is traditionally flavored with vanilla, but is also sometimes flavored with lemon or orange (zest), rosemary, chocolate, coffee, liqueurs, green tea, pistachio, coconut, or other fruit.