Once you try our polyester brew in a bag you won’t go back to using any other biab.
You might think every other biab grain bag is the same, but small design differences can really add up.
That’s where Doppelgänger Goods, part of the Doppeltree family of brands, stands out above the competition with our premium polyester brew bags.
ABOUT US
Since 1980 Doppelgänger Goods, part of the Doppeltree family of brands, has been designing premium products right here in California.
Give us a try, you won’t regret it.
Our bags are made of food grade polyester. No funny taste or leeching of chemicals you could get from other bags that could impact your mash. Rest assured your brew will come out tasting great!
Our brew bags use a fine ~210 micron weave so that only the mash from your grain drains and filters out from the boiling process and everything else stays behind.
NOTE: if youre looking for a super-fine weave ~90 micron weave, check out our organic cotton XL bag instead; see below.
Our EasyOpen drawstring makes untying the boil bag a fast and simple process.
We also made sure cleaning the bag is easy too. Just turn the bag inside out to dump out your grains or partial mash and then simply rinse it out. Let it dry and you’re ready to do another brew.
![]() |
![]() |
![]() |
![]() |
![]() |
|
---|---|---|---|---|---|
XXL Reusable Polyester Beer Brew In A Bag | XL Reusable Organic Cotton Brew In A Bag | Large Organic Cotton Reusable Cold Brew Coffee Bag | Medium Organic Cotton Reusable Cold Brew Coffee Bag | Large Organic Cotton Reusable Nut Milk Bag | |
Customer Reviews |
4.6 out of 5 stars
41
|
4.5 out of 5 stars
67
|
4.7 out of 5 stars
2,046
|
4.6 out of 5 stars
698
|
4.5 out of 5 stars
181
|
Price | $10.95$10.95 | $15.95$15.95 | $13.95$13.95 | $13.95$13.95 | — |
Bag Size (Width x Height) | 27in x 27in | 22in x 26in | 12in x 12in | 8in x 12in | 12in x 12in |
Filter Mesh Size (Microns) | Fine ~210 microns | Super Fine ~90 microns | Super Fine ~90 microns | Super Fine ~90 microns | Super Fine ~90 microns |
Fabric Material | Polyester | Organic Cotton | Organic Cotton | Organic Cotton | Organic Cotton |
Nylon Drawstring | ✓ | ✓ | ✓ | ✓ | ✓ |
Best Used For | Beer brewing - grain, partial mash | Very large batches of nut milk, cold brew coffee, wine, cider, fruit and veggie juices | 64oz or larger batches of cold brew coffee | 64oz or less batches of cold brew coffee, replacement for Toddy felt pad filters | Nut-soy-coconut milks, yogurt, kombucha, fruit and veggie juicing |
reusable brewing products for coffee, beer, nut milk, kombucha + more