Stoo Posted November 7, 2023 Share Posted November 7, 2023 Hi all. Just wondering how to work out my bulk priming weight for using a tin of coopers draught in my recipe. When I look at those bulk priming calcs, I can't see any draught in the list, so what sort of volumes of CO2 would I expect to use to work out my priming sugar values ? Would 2.0 be too high or should I drop it down to say 1.5 ? Thx Stu... 1 Link to comment Share on other sites More sharing options...
Shamus O'Sean Posted November 7, 2023 Share Posted November 7, 2023 17 hours ago, Stoo said: Hi all. Just wondering how to work out my bulk priming weight for using a tin of coopers draught in my recipe. When I look at those bulk priming calcs, I can't see any draught in the list, so what sort of volumes of CO2 would I expect to use to work out my priming sugar values ? Would 2.0 be too high or should I drop it down to say 1.5 ? Thx Stu... Hi Stoo, I would say 2.4 volumes of CO2 is pretty typical for a Draught. I think you would be looking at around 140g of sugar if bulk priming. I only ever bulk primed once. When I bottle I use 8g/L for priming. So 6g of sugar into each 750ml long neck bottle. 1 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 7, 2023 Share Posted November 7, 2023 18 hours ago, Stoo said: Hi all. Just wondering how to work out my bulk priming weight for using a tin of coopers draught in my recipe. When I look at those bulk priming calcs, I can't see any draught in the list, so what sort of volumes of CO2 would I expect to use to work out my priming sugar values ? Would 2.0 be too high or should I drop it down to say 1.5 ? Thx Stu... As a general rule of thumb, lighter beers (lagers, draughts) lean towards higher carbonation rates than heavier beers (stouts tending towards the lower end). I'd err on the higher side for a draught. 1 1 Link to comment Share on other sites More sharing options...
Stoo Posted November 8, 2023 Author Share Posted November 8, 2023 Thx guys, appreciate the input. Gonna use dextrose so I will go with about 150 grams then. Don't mind a bit of head. Cheers. 2 Link to comment Share on other sites More sharing options...
Oldbloke Posted November 8, 2023 Share Posted November 8, 2023 I bulk prime 190grams sugar for 23 litres. But about 170gr for 23 ltr of stout. Not sure dextrose will be the same. 2 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 8, 2023 Share Posted November 8, 2023 3 hours ago, Oldbloke said: I bulk prime 190grams sugar for 23 litres. But about 170gr for 23 ltr of stout. Not sure dextrose will be the same. The same mass of dextrose will provide less carbonation than sugar. Dextrose has 10% moisture. Link to comment Share on other sites More sharing options...
Oldbloke Posted November 9, 2023 Share Posted November 9, 2023 I had an inkling it was different. Sooo, 150grams will result in more or less flatish beer. 2 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 9, 2023 Share Posted November 9, 2023 5 hours ago, Oldbloke said: I had an inkling it was different. Sooo, 150grams will result in more or less flatish beer. I would expect it to be undercarbonated judging by the numbers in this thread and my side by side comparisons between sugar and dextrose priming. 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 10, 2023 Share Posted November 10, 2023 13 hours ago, Kegory said: I would expect it to be undercarbonated judging by the numbers in this thread and my side by side comparisons between sugar and dextrose priming. Under carbonated but not flat. It should be drinkable but a little more fizz wouldn't hurt. 1 Link to comment Share on other sites More sharing options...
Back Brewing Posted November 10, 2023 Share Posted November 10, 2023 (edited) I never have trouble with dextrose I always get good carbonation I find you have to condition them at 19.5c to 20c Edited November 10, 2023 by Back Brewing 3 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 10, 2023 Share Posted November 10, 2023 5 hours ago, Back Brewing said: I never have trouble with dextrose I always get good carbonation I find you have to condition them at 19.5c to 20c How much dextrose would you use for 23L? The higher temperature is interesting. Link to comment Share on other sites More sharing options...
Stoo Posted November 10, 2023 Author Share Posted November 10, 2023 On 11/9/2023 at 5:37 PM, Oldbloke said: I had an inkling it was different. Sooo, 150grams will result in more or less flatish beer. So I used a tin of wheat malt and 300 grams of dextrose in the mix. Will the wheat malt not give increased fizz in the end result ?? 1 Link to comment Share on other sites More sharing options...
Back Brewing Posted November 10, 2023 Share Posted November 10, 2023 8 minutes ago, Kegory said: How much dextrose would you use for 23L? The higher temperature is interesting. I prime by bottle 1 Link to comment Share on other sites More sharing options...
Classic Brewing Co Posted November 10, 2023 Share Posted November 10, 2023 1 hour ago, Back Brewing said: I prime by bottle That's all I ever did. 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 10, 2023 Share Posted November 10, 2023 2 hours ago, Stoo said: So I used a tin of wheat malt and 300 grams of dextrose in the mix. Will the wheat malt not give increased fizz in the end result ?? No, as I understand it the wheat malt will contribute to the size and retention of the head but it won't add to the carbonation. The 300 grams of dextrose in the mix will be fermented into alcohol. Only the dextrose you add after fermentation as a priming sugar will contribute to the carbonation. I am by no means an expert in anything brewing related really I've just been reading stuff including this thread and running my own little bottle priming exbeeriments. You'll be able to judge yourself but I reckon it will be carbonated but probably a little more would be better. I could be wrong, though, it may be perfect. Prior to my last batch I'd only ever bottle primed like BB & Phil. My last brew was my first attempt at batch priming but I haven't tasted it yet. I used 120g of dextrose in a 20L batch which is less than you used but it was an Irish Red Ale so it shouldn't have as much fizz as a draught. 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 10, 2023 Share Posted November 10, 2023 Here is a handy/useful/interesting Carbonation Priming Chart. Note that residual CO2 levels vary according to the fermentation temperature. Residual CO2 levels also vary according to altitude. It's all chemistry and physics and if I'd known I was going to be homebrewing I may have paid more attention in school. As you can see most styles have a range of CO2 rather than a set amount. Many/most people seem to settle on standard rate and apply it to all their brews because it's just more convenient that way. Some people, especially those that like to brew for competitions, will calculate an exact amount for the style they are brewing of whatever priming sugar they are using and apply it to each bottle. Each to their own. Draught isn't really a style, technically it's a delivery method (from a keg rather than a bottle), so it doesn't usually appear in such charts. But these days "draughts" are usually lagers and any number of styles can be found "on draught" in pubs. When I first bought beers in pubs, way back in the Bronze Age, the only beer on tap was Carlton Draught (except for a couple of places that had Guinness) and anything else was only available in bottles or cans. 1 Link to comment Share on other sites More sharing options...
Stoo Posted November 10, 2023 Author Share Posted November 10, 2023 @Kegory thx mate. Clearer picture now. Should of added just a bit more. Went with 160g but could have upped it to 190 g without consequence I'd say. 1g per bottle more. Doesn't seem like a lot but guessing it is. Will let you know in a cpl weeks. Cheers. 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 11, 2023 Share Posted November 11, 2023 56 minutes ago, Stoo said: @Kegory thx mate. Clearer picture now. Should of added just a bit more. Went with 160g but could have upped it to 190 g without consequence I'd say. 1g per bottle more. Doesn't seem like a lot but guessing it is. Will let you know in a cpl weeks. Cheers. Here are a couple of pictures of my earliest priming experiments. The size of the head will give you an indication of the carbonation rate. My beer, on the left, was primed with two carbonation drops in a 750ml bottle (the recommended amount). The next one is the same beer primed with two carbonation drops in a 650ml bottle (something around 15% more) The first one could have done with a little more fizz and the second a little less but they were both ok to drink. I reckon two carbonation drops in a 700ml bottle would have got pretty close to the carbonation rate in Coopers Sparkling Ale. 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 11, 2023 Share Posted November 11, 2023 @Stoo, this is my Irish Red Ale bulk primed with 120g of dextrose into 20L. 5 Link to comment Share on other sites More sharing options...
Back Brewing Posted November 11, 2023 Share Posted November 11, 2023 33 minutes ago, Kegory said: @Stoo, this is my Irish Red Ale bulk primed with 120g of dextrose into 20L. Carbonation looks good 1 1 Link to comment Share on other sites More sharing options...
Kegory Posted November 11, 2023 Share Posted November 11, 2023 48 minutes ago, Back Brewing said: Carbonation looks good Cheers. Yeah, I reckon that's comfortably within the target zone for the style. I hope they all come out like that. I've heard about other people's misadventures with bulk priming and this was my first attempt so I've got my fingers crossed. 2 Link to comment Share on other sites More sharing options...
Stoo Posted November 27, 2023 Author Share Posted November 27, 2023 @Kegory Just opened the 1st on and I think I got away with it mate. Am pretty happy. 5 Link to comment Share on other sites More sharing options...
Back Brewing Posted November 27, 2023 Share Posted November 27, 2023 (edited) 13 minutes ago, Stoo said: @Kegory Just opened the 1st on and I think I got away with it mate. Am pretty happy. Looks good mate a nice tight head and nice carbonation how did it taste? Edited November 27, 2023 by Back Brewing 1 Link to comment Share on other sites More sharing options...
Stoo Posted November 27, 2023 Author Share Posted November 27, 2023 7 minutes ago, Back Brewing said: 8 minutes ago, Back Brewing said: Looks good mate a nice tight head and nice carbonation how did it taste? Pretty good actually considering it was a draught tin. Holding head all the way. Cascade hops X 15g so nothing overly bitter. Cheers 1 Link to comment Share on other sites More sharing options...
Back Brewing Posted November 27, 2023 Share Posted November 27, 2023 2 hours ago, Stoo said: Well done @Stoo don't know what Uhtred finds funny but maybe he might let us in on it 2 Link to comment Share on other sites More sharing options...
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