Sentence:  Barbara had understood from her fifth year that it was not actually the same <WSD>wafery</WSD> substance, here on the table at Golders Green, that had been baked by the Israelites on the first Passover night, and yet, in a mysterious sense, it was ... 
Meaning of the word marked with <WSD> tags:  Like a wafer ("especially", thin, brittle, light).