Hi Clibit
Do you have any other ideas I could go for on this Cooper stout kit? I have in my grubby little mitts an 500g Muntons Extra dark DME & 1K of brewing sugar. And I still want to brew to about 15l as I have 22 spare bottles and don't want to spend anymore money on this except for maple syrup, treacle.
I have bought a different yeast to what comes with the kit, I bought 11g safale S-04 yeast to use instead.Ben
Hi Ben. I'm a huge advocate of adding grains to kits, either by steeping grains that don't need mashing, or by doing a mini mash. Both are easy, and really make a big difference, it just takes 2.5 to three hours to make a mini mash beer instead of 30 mins. But I'll stick to sugar and malt extract now, the Coopers stout gets great reviews everywhere for making a great stout with minimal effort. You can think about grains in the future.
I think brewing kits to 15 litres is not the best idea, unless they are very pale kits which are not too bitter to be concentrated, as brewing short increases the bitterness. With a stout kit, you are concentrating the roastiness by brewing short, and dropping from 23 to 15 litres will make a big difference. I would brew around 19 - 21 litres myself. Just collect empty brown beer bottles while it's fermenting. I have raided bottle bins in my back alley. Nearly said back passage there!
Your ingredients will make a great stout. If you make 20 litres with the kit can, the DME and 1kg brewing sugar your ABV will be about 5.9%.
I'd be inclined to use 750g of sugar, which would drop the ABV to about 5.3%, but improve the body of the beer.
But take your pick. And don't worry.
Yeast wise, I actually think Coopers kits are popular partly because they use decent yeasts. S04 makes a good stout too, but you could save the S04 for a kit that uses a worse yeast, check the date and store it in the fridge. One of the main reasons for kits improving in recent years is the availability of better dried yeasts. The kits that get good reviews are generally ones that use good yeasts for that beer style. If a kit has a decent yeast, and added hops, it can make a good beer. Stouts don't really need more hops though, unless you like the American style hoppy stouts.