I love this one-panel comic, but to me the original makes too strong of a case for KAM ("Kool-Aid Man") being the jar, not the liquid. The jar, because it's more permanent, and has the face & body. Meanwhile, the liquid is only temporary, and will be remixed and re-consumed.
ORIGINAL:
https://i.imgur.com/L10hePs.jpeg
So I used GIMP to remove the face on the jar. Now KAM has a stronger case to potentially be the drink itself, not to mention he looks much more fun at parties.
Not really sure where the best place is for more of the authors comics, but here's a start: https://www.google.com/search?q=%22pizzastrike%22+comics&udm=2
They had a commercial where he was getting ready for the day. In the shower, he was filling up with soapy water.
Hoping he rinsed out well after that...
Then later in that commercial he adds Kool Aid mix to his water.
So I'm pretty sure he's the pitcher.