RIS yeast flubbed out (maybe)

I made a massive RIS last month. Started at 1.098. I pitched a 2L stir plate starter of WY1335. The starter spent 3 days swirling.

I took a reading and its only down to 1.041, four weeks in. I plan on waiting another week and then take another reading. I know the yeast I used isn't the most alcohol tolerant. Its been at 63F for the duration of primary. My target is 1.024-1.028. Then bulk age six months. Then bottle.

My question is- if the next gravity reading I take shows no change, should I re-pitch with 05 or pacman, let it attenuate and then bulk age? I've also read that this will not work and that I need a cleaned yeast cake to move the beer onto because of the alcohol content (moving it 3 times seems like a risky move, oxygen wise)

I know I'm a little premature with the question, since I'm going to wait another week to make my decision but I'd like to hear from some folks before then in case I need a contingency plan.

Cheers!

4 weeks in I'd have to think most of the fermenting has been done. I'd wait to see what others say but what you're thinking sounds like a plan. 1.041 is just too high

What do you use to get gravity reading? All grain or extract?

AG. Hydrometer sample at 60F

All grain. Hydrometer sample 60F

Blindnil said:

All grain. Hydrometer sample 60F

Click to expand...

Do you remember you mash temp and qt/lb ratio for water?

kapbrew13 said:

Do you remember you mash temp and qt/lb ratio for water?

Click to expand...

151F 1.25qt/lb

Blindnil said:

All grain. Hydrometer sample 60F

Click to expand...

Or 68F, depending on your hydrometer. Not all hydrometers are calibrated at 60F.

Its a 60F calibrated hydrometer. Worked for 50 batches before hand. I use a refractometer for simple brews. Not for this bad boy.

just tossing in S05 or pacman likely won't work, but if you pitched either from a starter at high krausen you'd likely renew activity. racking onto another yeast cake like you mentioned should do the trick as well if you got one. have you tried just rousing up the cake by gently swirling and bringing to a warmer temp to see if re-starts itself? some of those english strains like to floc out a lil early

I will try to wake up the yeast. If that doesn't work I have a smash beer using S05 that I'll be kegging, so I can use that cake to finish up the RIS.