The Brew Bag Blog — polyester fabric

147º-164º Mash Temp-Sacrificing Enzymes-or, will The Brew Bag® melt?

bag melt BIAB brew in a bag flame on flame on during mash home brewing polyester fabric The Brew bag

147º-164º Mash Temp-Sacrificing Enzymes-or, will The Brew Bag® melt?

The question that needs asking is "why would I need to maintain exact mash temperature?" The answer is based on a number of assumptions by most brewers, but ultimately, the answer is based on detectability by those consuming the beer. 

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Mill Gap EXBEERIMENT - Coarse crush vs Fine

double mill grain grain crush mill gap setting polyester fabric The Brew Bag wort filter

Interested to find out if the mill setting makes a difference? We've done our own experiments as well and coupled with many BIAB brewers comments from around the web, come to the same conclusion - a finer crush aids in faster more complete conversion, higher efficiency numbers, and in our humble limited opinion a better tasting beer - but we're a bit biased on the taste side of things. The folks at Brulosophy conducted a test that you can find here.

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Is The Brew Bag food safe?

food safe polyester fabric The Brew Bag

Is The Brew Bag food safe?

    Frequently we are asked if the material we use to make the bags is food safe. Every component of the the bags is made from 100% polyester - thread, strap, material. Above you'll see the results of the test on the entire bag - all materials passed. For competitive reasons we have blocked out the name of our manufacturer. Below are links to other sites that confirm the results of our test.   http://www.tfia.com.au/satellite/textiles/about-polyester Polyester is the name of the fibre extruded from polyethylene terephthalate (PET), a widely used synthetic fibre traditionally used in clothing and bedding.  Polyester does...

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Flame On - Brew In A Bag best brewing practice - or - is adjusting temp mid-mash a good idea?

BIAB brew in a bag fabric for a brew bag flame on brew in a bag lost temperature brew in a bag polyester fabric The Brew Bag wort filter

I used to be the guy that chased exact temp mashing. As a home brewer does the final product benefit to any noticeable degree from being mashed at any constant temperature for the entirety of the mash? Does kettle mashing have any drawbacks compared to cooler mashing? Based on conversion facts what do we need to do to make good beer? It is a proven fact that when mashing grain, 90% of the conversion from starch to sugar occurs within the first forty-five minutes. For the non-scientific heat transfer explanation it is also proven that the mash insulates itself and...

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Can a grown man rip The Brew Bag?

BIAB brew in a bag fabric for a brew bag food safe making a brew bag polyester fabric The Brew Bag voile

I've never been asked that question, but in response to "is the bag strong?" I say, "the material can not be ripped by any man I know, (meaning the phone book rippers may be able to rip the bag, but I don't know any of them) and because of the strength and composition of the fibers, it will not rip - even after being cut. You can see a stress test of the fabric holding a forty pound container of water here.  In preparation for retail sales of The Brew Bag, we did all manner of testing on the material and the strapping. We pulled...

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