Some PM Questions

Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum

Help Support Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Yin_Yang

Well-Known Member
Joined
Jan 3, 2007
Messages
110
Reaction score
0
Location
Newfield, NY (5mi from ithaca)
Hey all. Most probably don't know me, but I'm back from almost 2 years of being gone. Anyway, with the temps cooling here in upstate NY soon, I was thinking about taking up brewing again for fun. The problem is it's been so long, and been so far from my everyday thought process that I've totally forgotten everything, and I've started rereading all my homebrew books, to try to remember how to do things, and some things are re-confusing me.

When I stopped I had made about 3 batches of extract/specialty grains steeping method beer. I figured I'd start with partial mashing this time around.

I guess I'll start asking.

1. First of all, how does one maintain the mashing temperatures throughout? I've seen the homemade cooler masher/tuns, and is it just as simple as heating the water, putting in the the grains, ensuring the right temperature and just dumping it into the cooler masher? WIll that hold the temperature for the full hour, or do you just have to keep watching the temperature, and keep adjusting it as it goes down naturally?

2. In all the steps I've been reading , it made no mention of the specialty grains, and when to put it in. do you mix it with the base grain, in the mashing process, or does it still have its own steeping process?

3. what kind of recipes do you look at when you're looking at partial mashing? do you look at all grain recipes, and use that, or what?

4. If I use all grain recipes, what is the final output in liquid volume? is it now in the 10-15 gallon range?

5. at the end of all the instructions i've been reading, after the mash is done, and lautered and tunned (sp?), it says to add your extract and proceed with the rest of the process? EXTRACT? I thought that was the whole point of the mash w/ the grains was to get the fermentable sugars you want from the grain, why do you need to add more extract, and how much do you add, since i dont see it in any of the recipes.

6. at the end of the 60 min. of mashing it says to raise the temp to 160-170 degrees and hold it for 15 min. how do you do that if you're using the cooler masher? do you put it back in the brewpot,and fire it up again, or do you just add enough hot water to raise the temp to the required temperature?

I'm sure I'll have more questions but those are the main ones for now.
 
1. Depends on how you do it...a cooler is one way, you can mash on your stove top or the oven too:
http://byo.com/feature/986.html
http://byo.com/feature/1536.html
http://www.homebrewmart.com/minimash.html

2. specialty grains in with the base grain

3. any recipe you want, you can convert an extract w/ specialty grain recipe or AG recipe to PM.

4. recipes can be scaled down if they were originally 10-15 gal, but this has nothing to do with they type of recipe.

5. Extract is necessary because you are doing a partial mash, getting part of your fermentable sugars from grain and the remainder from extract. If you get all your fermentables from grain, you're brewing AG.

6. You don't need to perform a mash out @ 170 but you can just add a small amount of heated water to your mash to raise the overall temp if you want and are not mashing in a vessel that can be heated.
 
Brewtool covered it pretty well!

Take a look at my Old Bog ROad Brown Ale Recipe, it shows how the amount of extract decreases in proportion to the amount of base malt in several different sized partial mashes. While the specialty grains stay the same.

https://www.homebrewtalk.com/showthread.php?t=61591

Read those articles Brewtool linked to, they are pretty straight forward.
 
but does the cooler keep the temperature at the needed temperature, or do i have to continuously monitor it?

also how do i convert ag to pm and extract to pm? how do i know how much gravity each lb. of grain gives? How much gravity does each lb. of DME give? that's what i mean by the recipe question.
 
dunno, haven't used your cooler. You're going to have to do a test run through and see how well it holds temp over the course of your mash.

As far as recipe conversion, there are plenty of resources online that discuss gravity points and recipes...I would suggest that after you get a couple PM batches under your belt, revisit this topic as it will make a whole lot more sense.
 
The Heat loss in coolers if really negligable...only 1 or 2 degrees over an hour, especially if you pre-heat it, even with hot tap water. If you are uber paranoid (but RDWHAHB, remember) you can always wrap it in a blanket...But that's usually overkill...

As to how to convert recipes back and forth, this is a handy guide to have.

http://home.elp.rr.com/brewbeer/extract/pres.pdf
 
Yin,
I originally bought a cheap cooler from Wal-Mart (5 gallon) for my partial mashes which didn't hold the temperature for a full hour so I added self adhesive duct insulation that I had laying around and it worked great! Here's a pic:

http://shouldibrewthat.com/beer/2008/07/18/mash-tun/

Here is the product itself:

http://tinyurl.com/6aw78n

It's a cheap alternative to buying a brand new cooler.
 

Latest posts

Back
Top