Max yeast attenuation with Mauribrew Weiss?

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helpmeguys

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Hi. I have a brew that started at 1060 and appears to have stalled at 1022....it consists of 3kgs of LME and 1kg of DME with a 500g mash of chocolate malt in 4 litres (steeped at 70-80 deg celcius for 30mins) which was then boiled with the DME and hops to get a mini wort. All made to 25 litres total volume. The yeast I used was dried Mauribrew Weiss....temps were around 25 deg.

I was a little fearful reading the yeast data sheet that I might kill the yeast with such a high potential alcohol level. Do you think this is what has happened? Also, is it possible that I over heated the chocolate malt and have lost usable sugars by doing so?
Currently it looks like 5%. If this yeast cannot handle the level of alcohol would it mean that bottling would result in flat beer? I'm guessing yes so maybe I need to add a higher alcohol capable yeast to ensure i can get a good fizz from my end product and finish eating the sugar that is still present.

Your thoughts and experience are very much welcome.

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