Many online sellers but no way of knowing which grains will produce a good quality kefir. If you can recommend a source that you're satisfied with, I'd appreciate the contact details. Thanks.

Milk kefir or water kefir grains? I use both.

I'm going to guess that you're looking for milk kefir grains. I used a Lazada seller called malee.baibua.

Typically, the amount online sellers provide is small but can be grown and expanded over a week or two in small batches.

Edited July 4Jul 4 by IsaanT

FUN FACT: Kefir comes from the Turkish word Keif and literally means "pleasure"

Which by co-in-ci-dence is exactly the same as the totally unrelated Arab slang word keif, which means sifted ganja 😅

Edited July 4Jul 4 by SiSePuede419
Clarification

6 minutes ago, SiSePuede419 said:

FUN FACT: Kefir comes from the word Keif which is sifted ganja and literally means "pleasure" 😅

I didn't know that - definitely a fun fact! 🙂

I make my overnight oats with milk kefir and have a bottle (or two) of water kefir with dinner every day. Great for a healthy digestive system.

Edited July 4Jul 4 by IsaanT

Don't know if you use online shopping but :-

https://shopee.co.th/search?keyword=kefir%20grains

5 hours ago, IsaanT said:

I didn't know that - definitely a fun fact! 🙂

I make my overnight oats with milk kefir and have a bottle (or two) of water kefir with dinner every day. Great for a healthy digestive system.

Have you ever tried fermenting your oats for a few days? Keeps nicely in the fridge when ready. Makes one of the most potent probiotic concoctions I've ever used.

Edited July 4Jul 4 by csaba81

1 hour ago, csaba81 said:

Have you ever tried fermenting your oats for a few days?

My wife makes this concoction a few times a week of rolled oats, oat milk, kefir and basil seeds and sets it out for a few hours and then tosses it in the fridge.

4 hours ago, csaba81 said:

Have you ever tried fermenting your oats for a few days? Keeps nicely in the fridge when ready. Makes one of the most potent probiotic concoctions I've ever used.

I make my overnight oats in batches of three so the last one lasts three days in the fridge. I wasn't aware that it became more potent but Gemini agrees with you, as it is consumed within 72 hours.

I include dried raisins in mine in the initial mix. They plump up nicely overnight. Lastly, I add cinnamon, chopped banana, chia seeds and pumpkin seeds, with a small drizzle of honey. It's a great way to start the day.

4 hours ago, novacova said:

My wife makes this concoction a few times a week of rolled oats, oat milk, kefir and basil seeds and sets it out for a few hours and then tosses it in the fridge.

Should be using steel cut oats....more texture, tastier and lower glycemic index.