bottle priming with treacle

dzilla

Howdy. I am priming a coopers irish stout and would like to try this with treacle.

Can anyone point me on how to do this? Do you just add the treacle to the end of the bottle? How much of it?

tyler71

Interesting one. Why do you want to use treacle? It's unlikely to have any effect on the taste, so sugar or DME would do just as well. It's difficult to say how much to use as this depends on the quality of the treacle - the lighter types have higher sugar content (up to 90%), the darker ones lower.
Logistically it sounds a bit of a challenge as well as treacle is so thick that it won't mix very well with your batch. If you are keen to use it then I would recommend boiling the treacle in a few hundred mls of water both to sanitise it and thin it out and then add this to a bottling bucket followed by your batch and then bottle. You mention adding to the bottle so you may not have a bottling bucket, in which case I'd recommend getting one as it makes carbonation a lot more uniform across the batch. If you're still determined on adding treacle to the bottle, then to get it right you'll have to calculate the sugar content of your treacle,use a calculator to get the right amount to measure (you're talking 100-110g table suger I would say, so a dark treacle at 50% sugar content would be 200-220g treacle), measure the density of the treacle and then use a dropper or pipette to add the exact right amount to each bottle. Even then mixing in the bottle may be poor, so carbonation will be slow. It does sound a complicated thing to do when you could get the same result by adding carbonation drops (or using a bottling bucket).
If you want to get a treacle flavour you'd be better adding it into your batch once primary fermentation is done. Still though I can't say that it won't turn out well as I've never tried it, so go for it and let us know how it goes!

fobster

Dark muscavado sugar would be just as good.

sharingan

Or unrefined cane sugar.

dzilla

Yeah I think I will do something like the molasses and the suger!