Remember that I said food is a tricky thing for archaeologists? It has gotten even tricker very recently, since a group of archaeologists discovered, per experiment, that
cooking fish can screw up radiocarbon dating. (They write about dating pots in the article; technically it's dating the organic residue trapped in the pot that is dated.) The article has links for more info in Danish.
Speaking of cooking: Daniel Serra and Hanna Tunberg are working on publishing their collaborate research about Viking food and cooking in a book, called "An early meal". There is an
info page on facebook (you do not need to have an account for that) if you want to read more.
And now... coffee.