Gator Shawn said:
Are there any restrictions on what material the pot I use to brew the mash is made of? My wife said she read that you can't use aluminum. I said:

but she failed to provide one. Still, I want to be sure.
There have been rumors about aluminum for years being linked to Alzheimers, but I don't think there's ever been a causal link established. Beer wort is somewhat acidic (pH of around 5, I think), but for the amount of time it's going to be in contact with the pot, I doubt you're going to be etching away any metal. Hell, finished beer is more acidic than the wort is (pH < 4), and it's packaged and sold in aluminum!Stainless is preferable due to durability and maybe more even heat distribution. But if you go with a fairly heavy grade aluminum pot, you should be fine.
You mentioned a 32-quart turkey fryer pot. At that size, you should be able to boil at least close to the full batch volume, although you'll need to be careful of boilovers. To end up at 5 gallons, you'll probably need to start with 6 to 6.5 gallons in the kettle to allow for evaporation losses.
In my opinion (based on 15+ years experience), here are some keys to getting the best results for whatever level of brewing you're at:
1. Boil as close to the full wort volume as possible. This will give you a truer beer color (for lighter styles; for stouts it won't really matter), and if/when you move beyond kits, you'll need less hops to get equivalent bitterness. Concentrated work darkens more during the boil and inhibits extraction of hop acids.
2. After the boil, chill the wort to <80F as quickly as possible, whether that's an ice bath for the pot, or a wort chiller of some type. Wort below 140F is an absolute BUFFET FEAST for bacteria. The sooner you can get it cooled and get your yeast in there, the less chance for other beasties to get a foothold. If possible, cover the pot with a lid or plastic wrap during the chill process - there are lots of wild yeasts and other undesirables floating around in the air. The longer you take to chill, the more important the cover is.
3. Yeast need oxygen early in fermentation. At minimum, you need to shake/stir the bejeezus out of it after it's cooled and in the fermenter. You can buy stirrers that mount in a drill that will do the trick. Whip up a good 3-4 of inches of foam on top; you want as much dissolved oxygen in the wort as possible. You can also look into an aquarium air pump (with a sterile filter), or an oxygenation kit. Ideally, you should see signs of active fermentation (i.e., bubbles) within 12 hours of pitching yeast.
4. Sanitize everything that's going to touch your beer after boiling. Hoses, siphons, whatever you stir or aerate with, and don't forget the fermenter itself. Suggestion: Fill the fermenter up with water & sanitizer, and soak all your stuff in it during the boil. When you're ready to put the beer in the fermenter, siphon or dump the liquid over to the bottling bucket.
5. Tubing is cheap. If it starts looking hazy or dirty, pitch it and buy new.
6. Keep the fermenter at a fairly steady temperature during fermentation; temp range depends on your yeast. Fermentation is exothermic - it will tend to warm up as it goes along, although the ambient temp will buffer that some. Temps at the low end of the yeast's range will ferment a bit slower, but generally with cleaner flavors; higher temps will go faster but produce more yeast-derived flavors (usually a somewhat fruity flavor/aroma). I assume you'll be starting with ales. Lagers require much more temperature control.
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