MBAA Rocky Mountain Out-of-towner 2008

Troy CaseyMillerCoors9.20.2008

Adventures in Brewing

• UC Davis Brewing - Past and Present• Research at Davis

• Brewing in Golden - Herman Joseph’s Private Reserve

Clear

Clear

UC Davis - 5 Gallon System

Clear

The New Brewery

DM and JS

The Future

Research at Davis

Silicon

• Silicon occurs in beer primarily through the hydrolysis silicate

Si(OH)4 Si(OH)3O- + H+

• Previous research states that silicon is primarily added in this way from malt and from the mineral content of water

Silicon and Bones

• Si, in the form of soluble silicate, has been shown to increase the bone mineral density of men and pre-menopausal women

• Due to silicon’s interaction with extracellular glycoprotein synthesis

Aluminum

• Al can be absorbed from sources such as drinking water and deodorant

• Average Al intake of 2-5 mg per day, but as much as 20 mg per day

• Silicic acid has been shown to react with Al, probably by the formation of alumino-silicates, to reduce the levels of Al

Research Design

• Commercial Beer• Malting Process• Raw Materials

Grain, hops, water, yeast

• Process Aids Silica gel, Diatomaceous Earth

• Brewing Process

Commercial Beer

Category Si (ppm) SD Spread N

All 29.4 12.1 6.4 - 56.4 100

Ales 32.8 11.4 11.1 - 55.5 67

Lagers 23.7 10.7 10.1 - 56.4 27

Wheat 18.9 3.4 14.3 - 23.4 7

Pale Ale 36.5 9.2 16.8 - 50.7 18

IPA 41.2 9.3 26.2 - 55.5 15

Non Alcoholic 16.3 6.3 6.4 - 25.7 6

Sorghum 27.3 4.8 23.9 - 30.7 2

USA 31.6 11.9 11.1 - 56.4 80

International 20.4 8.1 6.4 - 40.4 20

Raw Materials - Malt

Sample % Si

Pilsen Malt 0.17

2-Row 0.20

Carapils 0.20

White Wheat Malt <0.01

Crystal 20 0.24

Crystal 120 0.19

Chocolate Malt 0.10

Roasted Barley 0.12

Black Malt 0.08

Raw Materials - Hops

Sample (% alpha) % Si

Willamette (3.8) 1.00

Tettnang (4.3) 0.94

Cascade (6) 0.86

Centennial (8.4) 0.86

Nugget (12.5) 0.47

Millennium (14.5) 0.79

Process Aids

• Diatomacious Earth - No silicon pick-up

• Silica Gel - No silicon pick-up

Mashing/Lautering

• 4 tests - Same malt, 65ºC conversion temperature 60 min mash in mash tun, gentle

lautering 45 min mash, transferred to lauter tun,

gentle lautering Two 100 min mashes, transferred to

lauter tun One gentle, one “vigorous”

Mashing/Lautering

Mash length/lautering

type

Si extraction

60 min/gentle 3.5%

45 min/gentle 4.3%

100 min/gentle 5.5%

100 min/vigorous 6.2%

Boiling

• Two 1.3 bbl brews (10 °Plato, 15 IBUs)• 60.4 grams hops added (284 mg Si)• 20 minute whirlpool with Irish moss added

Brew Si in Fermenter

Si in Trub

1 79.5% 18.5%

2 73.9% 26.3%

Fermentation

• Two 1.3 bbl brews (10 °Plato, 15 IBUs)• Ale yeast pitched at 10*106 cells/ml

Brew 1 Brew 2Spent Yeast

Yeast Slurry

FermentationBoil

1362.54 mg Si (73.4%)

48 mg Si (2.6%)

49.3 mg Si

1808 mg Si

Spent Yeast

Yeast Slurry

FermentationBoil

1749 mg Si (89.2%)

32.2 mg Si (1.6%)

67.2 mg Si

1893 mg Si

Brewing at 5707’

Established to create specialty beers for discriminating beer drinkersSpecializing in small batch brewing

Uniquely located at 39º 45' 36" N by 105º 12' 51" W Brewed at an altitude of 5,707 feet above sea level

Small, 30-barrel Huppmann copper kettles, imported from Germany in 1973. Brewed by brewers, not computers

Introducing

Herman Joseph’s Private Reserve

Herman Joseph’s Private Reserve is a German-style lager brewed by AC Golden Brewing Company and sold only in Colorado. Born of German heritage

dating back to 1868, Herman Joseph’s recipe combines the finest European and North American hops with our prized Moravian two-row barley. Each small, 30-barrel brew begins with a slow and easy

120-minute boil. Select ingredients are added at the precise moment to build its taste complexities.

Each brew is then chilled to 1º Celsius and allowed to rest for weeks on end. This Chill-lagering

develops each HJ Private Reserve brew into a perfectly balanced, deep golden lager that is appreciated for its distinctive qualities and

unmistakable crisp, clean finish. Every bottle bears its distinct brew number and each case is hand

packed and sealed, assuring you that the Herman Joseph’s Private Reserve inside meets our

uncompromising standards. Because of the extra time required to brew, age and package this rare beer, it take us longer to craft Herman Joseph’s

Private Reserve – we believe you will agree……..it’s worth the wait.

Ingredients

• Four Hops German Hallertauer Taurus German Hallertauer Perle North American Sterling Saaz Noble Hops

• Four Malts Moravian two-row Weyermann CaraHell Dingemann's Cara 8 Briess Black Malt

Special Features

• Private Reserve• Extremely limited production

Average of 90 cases per week

• Long brewing and aging requirements• Hand made by brewers, not computers• Hand packed, inspected and sealed• Recipe roots extend back to 1868• Extremely limited distribution

Available in select upscale Denver area restaurants

• Sold only in Colorado – Great suggestion for out-of-town guests

• Every brew is identified with a “Brew Number”

Thank You

• MillerCoors• UC Davis• Glenn Knippenberg• Northern California MBAA

Enjoy!