Im’s (preview)

Mash in at 54°C
ramp up to 68°C over 15 min.
Cook oats with 8 cups (1.9 L) of water.
Add cold water to lower temperature to 53°C
and add 454 g base malt.
Hold for 15 min, then add to main mash.
Hold main mash at 68°C for 60 minutes until converted.
Mash out at 77°Cfor 10 minutes.
Sparge with 15.1 L 77°C water.
Boil 75 minutes, adding Irish moss and hops at stated intervals.
Ferment in primary for 7 days at 18°C.
Rack to secondary and ferment 14 days at 18°C.
Bottle condition with 1/3 cup (79 mL) corn sugar.


Extract Version

Substitute 3.74 kg Maris Otter pale malt extract syrup
for all but 907 g of the Maris Otter malt.
Mash the 907 g pale malt with the remaining grains at 68°C in RO water for 45 minutes.
Remove grains, rinse, dissolve extract completely in the resulting wort,
then top off to desired boil volume with RO water. Proceed as above.


Reference for Brewtan B

Brewtan B (formerly called Tanal B) is a 100% natural, high molecular weight tannic acid extracted from renewable plant materials specifically for the brewing industry. Incorporating Brewtan B into your process will improve the shelf life and enhance the flavor and colloidal stability of your beer.

The gallotannins in Brewtan B react with wort proteins through adsorption and precipitation - the Brewtan B/protein complex is left in the spent grains when Brewtan B is added to the mash, or removed in the whirlpool when it is added to the boiler.

It is highly effective at coagulating and flocculating proline and –thiol –containing proteins, but does not interact with foam-positive proteins. This in turn inhibits downstream lipid and protein oxidation, improving flavor stability and shelf life.

Dosage rate:
In the mash: 8 grams per barrel of mash liquor (8 g/1.17 hL). In the boiler: 5 grams per barrel of wort (5 g/1.17 hL).

Usage:
Dissolve powder in warm water; add solution to mash, boil, or both.

In the mash:
Add solution to mash water prior to dough-in. In the boiler: Add solution 0-5 minutes prior to end of boil.

Stability:
1 year, stored in airtight container in cool environment

Packaging:
available in 1 lb (0.45 kg), 3 lb (1.36 kg), 10 lb (4.53 kg), 25 lb (11.33 kg), and 50 lb (22.67 kg) units