Sentence:  In the A flat "andante", flowing like sweet honey, the waiter brings him, instead of coffee, a <WSD>bavaroise</WSD>; in the defiant C major Beethoven bellows out for his coffee: the waiter looks anxiously around, and, after a time again brings the <WSD>bavaroise</WSD>, but this time milled with “Obers.” 
Meaning of the word marked with <WSD> tags:  A drink of sweetened milk, eggs and tea, often with some sort of spirit.