I always culture my kefir with a lid on. I use a one-quart glass canning jar with a plastic lid, but a metal lid is also fine.
Insulated Packaging & Ice Packs
If it's hot in your area (between 90°-100° F), we recommend having your order shipped with insulated packaging and ice packs.
Here are a few things you should know:
- This will help your cultures stay cool for up to the first 72 hours of travel
- The package usually won't arrive cold
- This is ok, we just don't want your cultures to get too hot along the way (over 100°F)
- If it's hotter than 100° in your area, we recommend not ordering until it cools down.
- You'll still need to be home when the package arrives so you can bring it inside right away
- This shipping add-on doesn't count toward the $99 needed for free shipping
- We recommend selecting UPS Next Day Air or UPS 2nd Day Air for shipping.