Hi there !
I've bought recently some DME and the seller gave me the Analysis Sheet of this Malt , too .
It's written on the Sheet :
Colour : Light
pH ( 10% Solution ) : 5.3
Acidity % as Lactic Acid : 0.95
As pH 5.3 is a suitable Wort pH , does it mean that I should always make a 10% Wort out of this Malt ?!
Although , the pH would be different after the boil .
The 0.95% Acidity worries me, too . Is it high for making an Ale ?!
Can it lead to a sour Beer ?!
Is it better for me to use some Water which has more alkalinity ?!
Although , I've heard that using alkaline Water with DME leads to a harsh tasting Beer .
With DME, it really doesn't matter. Although bad tasting water will make a bad beer, so you don't want to use water that tastes bad or that is smelly with chlorine or sulfur.
You're not mashing with the DME, so the specs are not really important. The pH of a mash is NOT the same as the pH of the water.
I suspect the lactic acid was used to lower the pH of the extract down to 5.3. You will not taste it at this level. It will not be sour.
If the alkalinity of your water is too high, it can lead to harsh bitterness in paler, hoppier beers
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