Smack pack didn't fully swell, 15 hours later no activity in fermenter

[BrunDog]

Easier: put 150 grams DME into Erlenmeyer flask. Fill to 1500ml. Put on burner, add a few drops of fermcap. Turn to low once boiling, 10 minutes. Take off heat, drop in stir bar and add yeast nutrient. Cover with foil or star San soaked foam cylinder. Put in ice bath to cool, then add yeast. Put on stir plate for 24 hours, then fridge for 24 hours. Remove from fridge at start of brew boil to come up to temp. Discard flask wort leaving small amount and yeast at bottom. Swirl hard to suspend yeast. Extract stir bar with magnet. Pitch yeast into wort filled fermenter.

 

[bransona]

It's unlikely but not unheard of. I'd recommend what the rest have. Any way you can get to the lhbs for some 05?

 

[Beardown]

I'll definitely be doing the starter from here on out,, to save this batch I think I'll just throw in a new smack pack,, thanks

 

[govner1]

Manufacture date - nov 18 2015

At 6 months it's pretty much nonviable.
I'd pitch a pack of US-05 and move on.

 

[kh54s10]

I'll definitely be doing the starter from here on out,, to save this batch I think I'll just throw in a new smack pack,, thanks

Read up on starters. Pitching a new smack pack is still not enough yeast. If it is more fresh than the first one it will probably ferment the beer but not in an ideal way.

If there was any viable yeast in the first batch it will probably still ferment the beer. At ~10% viability I wouldn't be surprised if it took 5 days or longer to show signs. And then a really slow ferment and a long time to finish.

 

[BrunDog]

If the OP hasn't re-pitched by now, not sure what off flavors/bugs he'll get.

 

[Beardown]

Repitching today, there is obviously now sediment at bottom of Carboy, should I disturb the sediment and give the Carboy a shake Before pitching new yeast ? Or just toss it in as is?