"Sometimes." His mouth quirked, and he shot John an amused glance. "Mrs Hudson's quite good at cakes when she has the time to make them properly. I think she must have ninety percent of the cookbooks Julia Child put out. Did you know Julia Child worked for the Americans' precursor to the CIA, during the Second World War?"

It approached babbling, this outburst of data, but then it might take Sherlock a little while to get used to holding hands in public. Not that he let go or even looked up when Billy brought his glass of wine.