That cause sour/bitter, or diuretic/laxative effects?
Not meaning to hijack...
Sour/Bitter, but its not exactly a flavor as much as it is a mouth feeling thing.
I have a feeling the compounded levels of my water plus the extract's mineral levels were leading to the harshness.
Since I started all-grain & using bottled water (with salt additions) at the same time, I don't know for sure what the biggest influence was on my improved beers.
...But, they're far better, now & I'm afraid to go back to my tap water.
Here's my water:
Total Hardness as CaCO3 357 mg/l
Calcium as CaCO3 208 mg/l
Magnesium as CaCO3 149 mg/l
Sodium as CaCO3 42.1 mg/l
Alkalinity, Total as CaCO3 297 mg/l
Alkalinity, Bicarbonate 297 mg/l
Chloride as CaCO3 80.5
Sulfate as CaCO3 46.2
pH of Saturation 7.37
Langelier Index @ 8.8C -0.17
Free CO2 45 mg/l
Total Hardeness as CaCO3 20.9 gpg
Non-Carbonate Hardness as CaCO3 59.8 mg/l