Mangrove Jack M03 Newcastle Yeast

[TartanSpecial]

Has anyone used this??..if so how did you get on??
I'm currently brewing and all grain Porter ..SG 1.060, and I used 2 packs of Newcastle, re-hydrated, and the fermentation took off like a rocket after 3 or 4 hours and continued like that for one and a half days then just died...with gravity at 1.024 (instead 1.016 FG predicted for this yeast by Beersmith software). I read some people in the US had bad experiences with it seriously under attenuating but I didn't expect it to be this bad, especially since I kept the mash temp on low side to improve fermentablity.
I have attempted to rescue the batch by pitching a starter of Nottingham (Gervin G12) together with a little glucose to help it get established and it is starting to bubble away nicely...hopefully it will continue so I can reach a decent finishing gravity in the low to mid teens.

 

[MyQul]

I'm kind of interested in this yeast as I make a lot of milds. I was aware that it is is a medium attenuator but thought pitching two packets, like you have done, would do the trick. I wonder if re-hydrating than making a starter would get things down to the target FG

 

[TartanSpecial]

For the pitching of the M03 I did rehydrate the two packs in 220ml water. I only made the starter for my Gervin G12 rescue mission so I knew I would be pitching actively growing/fermenting yeast cells into the partly/almost fully fermented wort which would have around 5% alcohol in it.
Based on the manufacturer claims, it should be quite a nice strain for milds.
The other mangrove jack variants seems to get better reports on performance.

 

[cheshirehomebrew]

Gervin G12 is my yeast of choice for all the bitters I brew, it seems a pretty robust yeast strain and leaves a pretty clean taste.