Use any search engine with the search query '"from the clippings and shavings of angels' wings" Kipling' and you will find many results. For example:
Rudyard Kipling described the powerful elixir as being made "from the clippings and shavings of angels wings", but ...
... with Rudyard Kipling going as far as to state that they were made "from the clippings and shavings of angels' wings".
And from Wikipedia:
... including Rudyard Kipling, who described the drink as being made "from the clippings and shavings of angels' wings"
All search results are modern, so I will accept the answer that presents the earliest instance of the quote. I will also provide a bounty to the answer that identifies the originator of the quote.