I’ve started home brewing beer recently, and I’m assembling equipment for my first 5 gallon batch. The technique I’ll be using requires me to put grains into a nylon bag and then steep that bag of grains in hot water (approx 160°), much like a giant teabag. The trick is that the bag cannot touch the bottom of the stainless steel pot I’m using or I risk scorching the nylon bag. The typical way to avoid this is to put something between the bottom of the pot and the bottom of the bag. Often people will use a perforated pizza pan, such as this: http://www.foodservicewarehouse.com/browne-halco/57-5354/p7325.aspx People will then put nuts and bolts through some of the holes in the pan to act as legs, which raises the pan slightly from the bottom of the kettle. The bag can then rest safely on the pan without risk of touching the bottom of the kettle and scorching. However, this pan is aluminum, and my kettle is stainless steel, as are the recommended bits of hardware with which to make the legs. I’ve been doing some reading about galvanic corrosion, but I haven’t been able to get a clear answer from the homebrew forums about wether or not this would be a problem for me. It seems like the metal could corrode over a long amount of time, but even if I take care to minimize this, I’m still worried about impurities getting into my beer. I’d really just like to avoid any sort of nasty chemical reaction at all if possible. I cannot for the life of me find a stainless steel perforated pizza pan. Of course they’re available unperforated (just my luck), but I don’t really feel like drilling hundreds of little holes into a non-perforated pan such as this: https://www.amazon.com/dp/B000SSVP5...TF8&colid=3KKXQZ97MJ9ZC&coliid=I236KU0W4X222M There is another option I’ve discovered which I’ve never seen mentioned on the homebrew forums, and that’s to use a steel-plated grill grate, such as this: https://www.amazon.com/gp/product/B000WEIKL0/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1 I’m not sure if steel-plated is good enough, or if it needs to be solid steel. I’m assuming that the steel used here is stainless, but I don’t know for sure. Lastly, some people will use a steam rack such as this: https://www.amazon.com/dp/B007WAC8H...UTF8&colid=3KKXQZ97MJ9ZC&coliid=IQ4QURPIFT9B0 These are chrome-plated, and I don’t know if that’s any better or worse than aluminum or steel-plated. Any and all advice is greatly appreciated. Thank you!