Lager Idea

[danbriant]

So I'm going to brew a Lager. I do a lot of Ale brewing.
So for this lager I'm just going to leave it in the shed/garage with a blanket. As it's quite chilly outside and should be good for brewing a lager. Can't get a fridge due to lockdown

Anyway I wanted to use some of my homegrown hops, first year growing them and using them. Infact this would be the first brew xD, but as always never know the AA Value. So was thinking of just using them in the last 15 mins as the only hop addition?
The hops are First Gold and dried by myself and frozen in vac packs.

The hops are really the only unknown, but would everything work? Any changes?

The recipe:

Recipe Specifications
--------------------------
Boil Size: 28.00 L
Post Boil Volume: 23.50 L
Batch Size (fermenter): 23.00 L
Bottling Volume: 21.00 L
Estimated OG: 1.044 SG
Estimated Color: 4.3 SRM
Estimated IBU: 12.5 IBUs
Brewhouse Efficiency: 75.00 %
Est Mash Efficiency: 83.2 %
Boil Time: 90 Minutes

Ingredients:
------------
Amt Name Type # %/IBU Volume
3.00 kg Lager Malt (2.0 SRM) Grain 1 68.2 % 1.96 L
1.00 kg Vienna Malt (3.1 SRM) Grain 2 22.7 % 0.65 L
0.20 kg Carafoam (2.0 SRM) Grain 3 4.5 % 0.13 L
0.20 kg Caramel/Crystal Malt - 30L (22.7 SRM) Grain 4 4.5 % 0.13 L
30.00 g First Gold [6.50 %] - Boil 10.0 min Hop 5 12.5 IBUs -
1.0 pkg Diamond Lager Yeast 6 - -


Mash Schedule: Single Infusion, Medium Body
Total Grain Weight: 4.40 kg
----------------------------
Name Description Step Temperat Step Time
Mash In Add 14.97 L of water at 71.6 C 66.7 C 60 min
Mash Out Add 6.43 L of water at 98.6 C 75.6 C 10 min

 

[An Ankoù]

Why not use a "clean" hop of known alpha acid content, like Magnum for the boil and then use First Gold at in the last 5 minutes and at flameout. You can pretty much use as much as you like, but not so much that it tastes "grassy".
I'm not sure that First Gold is used much, if at all in lagers, but what the hell!

 

[MrRook]

When I was growing hops I'd go by the middle of the range for commercially grown versions and not worry about it.