purification
" I love to be among the little children,sir! How I love to hear their prattle and their little voices lisping merry rhymes!Oh, sir! can you think of a more innocent way of earning a living, than to sell good ice-cream at modest prices to little children,after so many years of selling tricks to dirty old men.Why, each day in that white, well-scrubbed, shining ice-cream parlour was a positive purification! Don't you think sir, that in heaven we shall all eat nothing but ice-cream?"
from : Nights at the Circus
I think it is true that some foods can purify , I have the same feeling for cold milk, and vegetables as well as ice-cream.