mrs. shaw gives him a snack she sometimes calls afternoon tea or even high tea , and no matter what it is-cottage cheese and fruit , a sandwich with the crusts cut off , custard and cake , leftover canapes from a cocktail party the night before-she sings the same little song when she lays it out : `` a little snack that 's far and wee , there 's some for you and some for me , blackberry jam and blackberry tea . ''