Trashy Tea doesn't heal anything immediately, but spills garbage all over the battle box and gives the SOUL a broom, and it acts exactly the same as the 
CleanUp ACT in the Trashy Trio fight except instead of adding mercy it heals depending on how much trash you sweep up, and all the trash instantly despawns at the end of the turn
Little Ball Tea
Heals 100 HP.
Very sweet. Makes the soul take no damage and just get bounced around by bullets for 3 seconds.
I think that that would probably be more like, invincibility frames are extended but you bounce around during them, not just give you the effect for free, since that would be WAY too overpowered
You could just use that and completely skip really hard attacks
Mewmew perpendicular bomb
Gaster Tea resets your save and kills whoever drinks it
no you don't die you're just removed from existence
And if anyone asks what happened to them everyone else is like "who's that?"
Xander tea heals you but only if you’re cool
puer tea heals you for like 2 hp and then kills you nine hours later
wizard tea does the same thing, but it takes nine years to kill you instead of nine hours
thundersnail tea summons an immortal snail
It's just an immortal snail though. That's it.
...and gives you temporary indigestion
Who knows what happens if you touch it
That’s a blood fountain folk 
its actually an hypernova
...kinda.
bykir