White beer and lemon
To the question "Is there any good reason for putting a slice of lemon in a glass of white beer?", Beer & Health answer: "The flavourings most frequently used in the making of white beer are coriander and bitter Curaçao orange peels. Besides, any self-respecting brewer has his own magic satchel of secret herbs and spices. The sourish, refreshing taste can be somewhat enhanced by a slice of lemon. This is almost systematic in certain establishments. If you want to heighten that refreshing taste, by all means drink your drink with a slice of lemon."