Jimbro wrote: ↑Fri Sep 15, 2017 12:21 pm
Hi Wales, the brew is 22 L, 1 kg of spraymalt and 21°.
Because I am still learning, is it a no no to dark spraymalt with a porter? All I had in the cupboard to be honest. I know now that I will probably end up with a weak Porter but Hey ho

.
Hi Jimbro,
I would agree that your OG would have been approximately 1.040 with your fermentables in a 21L brew.
Dark Spraymalt is fine for a Porter,as some porters can be dark brown to jet black in colour, so dark would have been my choice too.
It does just sound like your spraymalt wasn't fully mixed in properly or that you have a duff hydrometer in your kit. Have you checked the calibration of your hydrometer in tap water? It should read 1.000 in tap water @20C.
The yeast will seek out the sugars an ferment ok, so you should end up with a 4.0% ish Porter rather than a 3.0% Dark Mild
Cheers
MB