I am doing a 5 gallon batch of Maris Otter and Amarillo.

My current thought is
10lb MO mashed at 156*

- .5oz 60min
- .5oz 15min
- .5oz 5min
- .5oz flameout

I want this to be an easy drinking beer for a department party.

Any one done something similar? Thoughts on hops schedule or another hops to use (Galaxy has crossed my mind)?

If you are dead set on a SMaSH, then looks fine.

If it's for people who won't appreciate that fact but will still enjoy the beer, I'd suggest not wasting money on expensive hops for bittering.

Magnum or Chinook for bittering then .5 Armarillo at 10 and .5 whirlpool

Or you could move the 60 minute addition to 20 minutes and skip the bittering.  I understand some brewers skip a bittering addition in some IPAs and they turn out fine.  Also, I'd dry hop.

I do want the true single hop because half are brewers and the other half drink whatever we provide.

Would the IBUs be way off if I skip the bittering? (Not by my brewing software at the moment)

What are the IBUs youre looking for

25-28

Galaxy is a wonderful hop, but I support going for a SMaSH if you haven't done one with amarillo before.

Your current recipe, assuming you're using 1056 as your yeast, looks ok as it sits. Beersmith kicked back:

ABV: 5.16%
OG: 1.055
FG: 1.015
IBU: 24.1
Color: 4.6 SRM


The only change I would make is to drop your mash temp to 152*F.  Assuming you're using a cooler for your mash tun, add 12.5 qt of water at 164*F, mash for 60 minutes then batch sparge with 168*F water. Beersmith says use 1.33 qt, 9.03 qt, and 9.03 qt in your sparges.