Typical mooncakes are round or rectangular pastries, measuring about 10 cm in diameter and 4–5 cm thick. This is the Cantonese mooncake, eaten in southern China (Guangdong, Hong Kong). A rich thick filling usually made from red bean or lotus seed paste is surrounded by a thin (2–3 mm) crust and may contain yolks from salted duck eggs. Mooncakes are usually eaten in small wedges accompanied by Chinese tea. Today, it is customary for businessmen and families to present them as presents.