Natto, a Japanese dish made from fermented soybeans, is one of the best sources of vitamin K2. Other good sources include meat, liver and cheese (9Trusted Source).
pretty sure this is the stuff that is really nasty
Dutch cheeses, especially Gouda have good amounts of K2 (MK-7 and MK-9).
The bacteria produce it.
Pastured eggs (hens on pasture eating whatever they find) too.