Tried making an auto brewer where you put a water bottle inside a brewer, then when it would be done brewing the potion would just go down into a dropper and dispense the item to wherever. But i can't seem to get it to work, maybe you guys have something like this?
If i understand correctly what you meant you want the potion to be a splash potion and to be in a dispenser so that the player can push a button and get the effect. I have a design that can do this with some edit if it is what you are looking for. Here it is:
Just have the potions go in a dispenser instead the chest i have and have the button infront so that the player can get the effect.