Smooth finish on a brew... Help on what might have caused it?

I brewed the following recipe this summer and ended up with a pale ale with an incredibly smooth finish.  It seemed to be just what I wanted after about 6 weeks in the keg.  I would like to try to get this finish in a few of my other recipes, but I don’t have a lot of brew time for experimentation (brew once a month and have four kids with plenty of activities) and was wondering if any had recommendations/ideas/input on what might have contributed to this finish?  or could this be multiple things in combination?  I was thinking maybe to a couple batches with wy1450 and different low alpha acid hops and doing a 5 gal. batch and fermenting 2 2.5 gal buckets with different yeasts.  To further complicate things I switched to a cooler setup where this batch was done when I was doing BIAB, so maybe I should do a no sparge with a thin mash?  If I keep adding test cases/scenarios, It would be over a year before I figure this one out.

Recipe Specifications

Boil Size: 7.76 gal
Post Boil Volume: 6.76 gal
Batch Size (fermenter): 5.50 gal 
Bottling Volume: 5.00 gal
Estimated OG: 1.055 SG
Estimated Color: 7.8 SRM
Estimated IBU: 36.1 IBUs
Brewhouse Efficiency: 70.00 %
Est Mash Efficiency: 82.7 %
Boil Time: 60 Minutes

Ingredients:

Amt                  Name                                    Type          #        %/IBU       
12 lbs                Pale Malt; American (Farm Boy Farms) (6. Grain        1        100.0 %     
0.75 oz              Cascade [6.30 %] - First Wort 60.0 min  Hop          2        15.7 IBUs   
0.75 oz              Cascade [6.30 %] - Boil 30.0 min        Hop          3        11.0 IBUs   
1.00 oz              Cascade [6.30 %] - Boil 15.0 min        Hop          4        9.4 IBUs     
1.00 Items            Whirlfloc Tablet (Boil 10.0 mins)        Fining        5        -           
0.50 tsp              Yeast Nutrient (Wyeast) (Boil 10.0 mins) Other        6        -           
1.00 oz              Cascade [6.30 %] - Boil 0.0 min          Hop          7        0.0 IBUs     
1.0 pkg              Denny’s Favorite 50 (Wyeast Labs #1450)  Yeast        8        -

Mash Schedule: BIAB, Medium Body
Total Grain Weight: 12 lbs

Name              Description                            Step Temperature        Step Time           
Saccharification  Add 8.64 gal of water at 162.2 F        155.0 F                75 min             
Mash Out          Heat to 168.0 F over 7 min              168.0 F                10 min

Could be the first wort hopping?

Smooth is kind of hard to diagnose from a distance but one thing pops out at me. You have your FWH at 60 min, when its probably perceived as more like a 20 min. So probably its a combo of that and ph

Nothing about that pale ale recipe stands out as “bitter” or “harsh”, so I would expect a “smooth” beer with the recipe given.  FWH, in my book, are simply bittering hops with an added few IBUs - nothing about them is perceived as extra “smooth” to me.  Take a pale ale with relatively low BU:GU ratio, couple it with a yeast that takes it’s time to flocclate, and by the time the beer clears it should be well aged and mellowed due to yeast-isoalpha acid bonding and flocculation.  I would try it again exactly as you have detailed.

Thanks for insight.  I think I am going to try and reproduce the current on my new cooler setup, then take it from there staying with fwh/yeast and changing the grist, then hops.

So you added 8.64 gals. To the mash with no sparge ?

I think you may have to define what you mean by “smooth finish”.  But I agree that both the FWH and the yeast could contribute to what I imagine you mean.

I was doing a BIAB… mashed with full volume and just removed the bag with grains.

Yeah… I agree, gotta work on that description too when I brew the next batch.

What I think he means is that smooth is a texture so its describing the mouthfeel. But I’ll bet you mean flavor.

I think it has less to do with the recipe and more with aging. You didnt say how it was stored for 6 weeks, but you may have accidentally lagered the beer. Some of the benefits of lagering I found; http://www.homebrewing.org/Lagering–Chapter-1-Common-Misconceptions_ep_58-1.html

the times I have used Denny’s 50 versus Chico, I’ve always felt it was ‘smoother’ than the same recipe with Chico.  I prefer that type finish in ambers, american browns and american porters, not so much in APA or IPAs.

Maybe that is what you’re getting.

+1.  I notice that too, which is why I like 1450 for those styles - the softer, maltier mouthfeel or whatever.  Which is also why I don’t use it for APA and IPA.  Good call.

Age plus yeast choice but FWH with no 60 minute addition.

My kegerator is set for 41 degrees, if that helps shed a little light on things.  My kegerator only holds two kegs, so i generally kick em in 8 weeks or less.

I’d be interested in how your next batch of this beer works out. How reminiscent of your last batch it comes or doesn’t. Keep us posted.