I think yogurt counts as a "gel."

If you can fit the yogurt containers into the Kippie baggie, and each container is 3.4oz or less in volume, then there's no reason why TSA would prevent you from brining the yogurt through.


I had the same issue with peanut butter, which is considered a "gel." Now, I make the sandwiches in advance instead of bringing a tub of PB with me.