Another one.(Apologies if i have said this before)
I think that when you make potions instead of just using a mushroom with a flask you should fill the flask with water and then use the mushroom on it.
To get water you use a bucket with a well/river and this bucket can fill 8 small flasks 4 meduim flasks 2 large flasks.
Just drag the bucket on to the flask and a number will pop up stating how many flasks you want to fill,select the number and then drag the water filled flask to the mushroom you want.
Washing tubs and bottles of water cannot be used to fill flasks.