US-05 in 5 Gal of 1.070 Beer

[Eucrid]

As the thread title suggest I want to use US-05 in a 1.070 IPA and I'm wondering will one packet be enough or should I use 2?

 

[LakeErieMonster]

http://www.mrmalty.com/calc/calc.html

Pretty close. I would say you would be fine if you dont have another packet handy.

 

[zoomzilla]

If you properly hydrate the yeast and properly aerate the wort it will do just fine. If you are simply shaking the carboy and pitching dry yeast on top of wort I wouldn't expect proper attenuation.

 

[Eucrid]

Well I don't have a stone for oxegen but I always rehydrate and try to let the wort get oxygen naturally as well as shaking the carboy. Maybe if I up my efforts on that front I'll be ok.

 

[unionrdr]

I totally agree! I aerate well & rehydrate the dry yeast in my Erlenmeyer flask for a total of 30 minutes. I nuke 400mL of spring water in the microwave till it's at about 80-90F. Then sprinkle in the dry yeast & cover with some sanitized foil or plastic wrap. Let sit 15 minutes then stir with a sanitized skewer or other. Then let sit another 15 minutes. All this while chilling the hot wort.
When ready to pitch, sanitize the skewer again & stir the mixture into a cream & pitch with ten degrees of current wort temp so as not to shock the yeast.

 

[byrone]

When is the expiry on the package? Dry yeast has a shelf life of 2 years if I'm not mistaken, so if it is a newer package then you should be fine with just re-hydrating but if its more than six months old I would make a 1L starer or pitch 2 packages.