Lots of source talk over lunch, as in who is the source of the BBC's story about a Labour-Plaid deal. Not sauce, as in mint.
Unsurprisingly, Labour politicians are apoplectic. The number of angry phone calls Peter Hain got from "parliamentary colleagues this morning has been quite phenomenal", I hear. One Labour AM told me that whoever has been speaking to BBC Wales can "crawl back under whatever stone they crawled out of".