May I help you with translation? Garrison Keillor has popularised 'powdermilk biscuits' - a bit of his own fiction. It's true that a biscuit in England is called a cookie in the United States. But a biscuit in the US is what you British call a scone. Can you imagine a lovely, rich scone being made from reconstituted powdered milk - non-fat milk, as is usual in the US? Herein lies the Keillor oblique, understated humour.