Sentence:  They decided, sotto voce, to go out for a <WSD>falafel</WSD>. ... The falafel itself was incidental: it was the array of salds, pickled and fried vegetables, olives and sauces which one stuffed into the "pita" that made it such an adventure. 
Meaning of the word marked with <WSD> tags:  (en)  A pita with falafel balls inside (like a sandwich or a wrap).