Plant ID

Hi Folks!
New to the forum, im in south texas near the Nueces River. Can anyone ID this vine? Ive been doing a field test over time to see if it is safe, but stopped at the stage where I touched it to my lips, juice is clear, sweet, but gave a slight burning sensation. Thanks and be safe!

Looks like porcelain berry. Check it out here it says they are edible.

ampelopsis brevipedunculata

I found a document with finer details that compares porcelain berry and native grapes ( some look very similar to this picture you posted). Here

definitely not porcelain berry, nothing about it is right

While I disagree with Alex that NOTHING about it is right. I do agree that it is not porcelain berry. On further search there is a native that is perhaps a bit more likely.

So I am changing my guess to Ampelopsis arborea AKA peppervine.