Finding Kefir Grains

Kefir is a fermented milk product that can be made at home very easily, once you have some kefir grains. Wikipedia has a page giving some information about kefir here.

Sharing real kefir grains

Lots of people have kefir grains to share. Once you have real kefir grains, you never need to buy a starter culture ever again, because they are living things and will propagate. In fact, soon you’ll be able to give some of your kefir grains away to someone else!

Directories of people who share real kefir grains

Cómo conseguir kéfir (how to obtain kefir)
Spanish list with sources for kefir grains, water kefir grains, and kombucha in Spain, Portugal, and Latin America
(Kéfir de agua, Kéfir de leche, Kombucha)
Kéfir de lait, ou Les graines du bonheur !
French list with sources for kefir grains, water kefir grains, and kombucha
(Kéfir de lait, Kéfir de fruits, Kombucha)

Email lists and web forums where people share real kefir grains

Commercial sources

Buying real kefir grains

You can buy real kefir grains from these people, and some of them can ship dried kefir grains internationally.

Dom’s Kefir In-site
Based in South Australia, Dominic Anfiteatro is the kefir guru and can supply you with kefir grains and a copy of his book. His website is also worth checking out for the amazing amount of information about kefir!
Grow Youthful
A company in Australia, with a range of fermenting cultures including kefir grains, water kefir, and kombucha.
G.E.M. Cultures
A company in California, USA, with a range of fermenting cultures including kefir grains and kombucha.
Cultures for Health
A company in Oregon, USA, with a range of fermenting cultures including kefir grains, water kefir and kombucha.
Organic-Cultures.com
A company in Missouri, USA with a wide range of fermenting cultures including kefir grains, water kefir, and the ginger beer plant, shipping locally and internationally.
Fruit Of The Vine Naturally
A company in the USA, with a range of fermenting cultures including kefir grains, water kefir and kombucha.
Yemoos Nourishing Cultures
A company in the USA with a range of fermenting cultures including kefir grains, water kefir and kombucha, shipping locally.
Kefir Store
A company in the USA with kefir grains, shipping locally and internationally.
kefir-sante
A French company with kefir grains, water kefir, and kombucha.
The World of Kefir
A company in Malaysia with kefir grains, water kefir, and other products, shipping locally

Buying powdered kefir cultures

Powdered kefir cultures are a good, reliable way to make kefir. However, they need to be refreshed periodically — or in other words, you need to keep buying the starter. This is still a good option for people who don’t have the time to keep real kefir grains fed and happy.

Kefir Culture Natural
Company based in Australia
Body Ecology
Company based in the USA
The Kefir Company
Company based in the UK, shipping locally and internationally

Affiliate websites offering kefir grains and videos

These are websites that have some great information on kefir, and are affiliated with an Internet-only supplier that pays them commissions. Some offer really good support, so check out their forums / comment threads.