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March 1998 Volume 21, Issue 3

1998 AHA Style Guidelines Changes

by Ken Koupal

Good news - the 1998 AHA style guidelines are finally posted on the internet. Unfortunately, AHA never tells you what changed from 1997. This article reports the changes ("delta") between 1997 and 1998. If you don’t see a particular style category, then nothing has changed.

I always like to know the reason for changes. Some are plain old corrections (FG=1.0018 should be 1.018). Some are due to rounding (2.5 becomes 3, or vice versa). Some are split categories (Belgian-Style Strong Ale split into two categories; Pale and Dark). Some are combined categories (English-Style Old Ale/Strong Ale now includes Very Strong Ale). Some didn’t make sense (IBU numbers for Mead). The SRM/EBC conversions are so entirely different that I suspect a new formula was used. Some may be new typographical errors. Some have changed very little; some have change a lot. Some have changed identity (what was category 2g is now category 2h).

Well, gee whiz, a whole bunch of numbers (yawn). Why should I care? The point is that the style you may be familiar with may now be stronger or more bitter or darker, or have tighter ranges, or be split into new categories. If you use brewing calculation software, now you can populate the database with the most current values.

So, without offering any explanation for the changes, here are the new and old numbers:

 

Style/Category

Year

OG

O °Plato

FG

F °Plato

%A/W

%A/V

IBU

SRM

EBC

2a

Belgian-Style Flanders Brown/Oud Bruin

1998

               

24-35

2a

Belgian-Style Flanders Brown/Oud Bruin

1997

               

30-70

2b

Belgian-Style Dubbel

1998

               

20-28

2b

Belgian-Style Dubbel

1997

               

20-35

2c

Belgian-Style Tripel

1998

 

15.0-24.0

     

7.0-10.1

 

4-6

7-11

2c

Belgian-Style Tripel

1997

 

17.5-24

     

7-10

 

3.5-5.5

7-14

2d

Belgian-Style Pale Ale

1998

     

2-4

 

4.1-6.2

 

4-12

7-24

2d

Belgian-Style Pale Ale

1997

     

2-3.5

 

4-6.2

 

3.5-12

7-30

2e

Belgian-Style Pale Strong Ale

1998 new

1.064-96

16.0-24.0

1.012-24

3-6

5.5-8.8

7.0-11.0

20-50

3.5-7

7-14

2e

Belgian-Style Strong Ale

1997

1.064-96

16.0-24.0

1.012-24

3-6

5.5-8.6

7-11

20-50

3.5-20

7-80

2f

Belgian-Style Dark Strong Ale

1998 new

1.064-96

16.0-24.0

1.012-24

3-6

5.5-8.8

7.0-11.0

20-50

7-20

14-40

2g

Belgian-Style White (or Wit)

1998

     

2-3

       

4-8

2f

Belgian-Style White (or Wit)

1997

     

1.5-2.5

       

5-10

2h

French-Style Biere de Garde

1998

                 

2g

French-Style Biere de Garde

1997

                 

3a

Belgian-Style Lambic

1998

     

0-3

 

5.1-6.4

   

12-26

3a

Belgian-Style Lambic

1997

     

0-2.5

 

5-6

   

15-33

3b

Belgian-Style Gueuze Lambic

1998

     

0-3

 

5.1-6.4

   

12-26

3b

Belgian-Style Gueuze Lambic

1997

     

0-2.5

 

5-6

   

15-33

3c

Belgian-Style Fruit Lambic

1998

 

10.0-18.0

     

5.1-7.0

     

3c

Belgian-Style Fruit Lambic

1997

 

10-17.5

     

5-7

     

4a

English-Style Light Mild

1998

         

3.4-4.1

   

16-33

4a

English-Style Light Mild

1997

         

3.2-4

   

16-40

4b

English-Style Dark Mild

1998

         

3.4-4.1

   

33-67

4b

English-Style Dark Mild

1997

         

3.2-4

   

40-135

4c

English-Style Brown Ale

1998

     

2-4

 

4.2-6.0

   

30-43

4c

English-Style Brown Ale

1997

     

2-3.5

 

4-5.5

   

35-90

4d

American-Style Brown Ale

1998

 

10.0-13.8

 

3-5

 

4.2-6.0

   

30-43

4d

American-Style Brown Ale

1997

 

10-14

 

2.5-4.5

 

4-5.9

   

35-90

5a

Classic English-Style Pale Ale

1998

         

4.5-5.4

   

8-22

5a

Classic English-Style Pale Ale

1997

         

4.5-5.5

   

10-25

5b

English-Style India Pale Ale

1998

     

3-5

 

5.1-7.6

 

6-14

12-28

5b

English-Style India Pale Ale

1997

     

3-4.5

 

5-7.5

 

8-14

16-35

6a

American-Style Pale Ale

1998

               

8-22

6a

American-Style Pale Ale

1997

               

10-25

6c

American-Style Wheat

1998

 

7.5-12.5

 

1-5

 

3.6-4.6

12-17

   

6c

American-Style Wheat

1997

 

9.5-12.5

 

1-4.5

 

3.5-4.5

5-17

   

7a

English-Style Ordinary Bitter

1998

 

8.2-9.5

 

2-3

 

3.1-3.8

   

16-24

7a

English-Style Ordinary Bitter

1997

 

8-9.5

 

1.5-3

 

3-3.7

   

16-30

7b

English-Style (Special) Best Bitter

1998

 

9.5-11.3

 

2-3

 

4.2-4.8

   

24-28

7b

English-Style (Special) Best Bitter

1997

 

9.5-11

 

1.5-3

 

4.1-4.8

   

30-35

7c

English-Style (Extra Special) Strong Bitter

1998

     

3-4

       

24-28

7c

English-Style (Extra Special) Strong Bitter

1997

     

2.5-4

       

30-35

8a

Scottish-Style Light Ale

1998

 

7.5-8.8

 

2-3

 

2.8-3.6

   

16-33

8a

Scottish-Style Light Ale

1997

 

7.5-9

 

1.5-3

 

2.8-3.5

   

16-40

8b

Scottish-Style Heavy Ale

1998

 

8.7-10.0

 

3-4

 

3.6-4.1

   

20-37

8b

Scottish-Style Heavy Ale

1997

 

9-10

 

2.5-3.5

 

3.5-4

   

20-75

8c

Scottish-Style Export Ale

1998

     

3-5

 

4.1-4.6

   

20-37

8c

Scottish-Style Export Ale

1997

     

2.5-4.5

 

4-4.5

   

20-75

9b

Robust Porter

1998

           

25-40

   

9b

Robust Porter

1997

           

20-30

   

10a

English-Style Old Ale / Strong Ale / Very Strong

1998

1.055-125

13.8-31.5

1.010-40

2.5-10

4.2-8.9

5.3-11

24-80

8-21

16-42

10a

English-Style Old Als / Strong Ale

1997

1.055-1.075

14-19

1.008-20

2-5

4.8-6.4

6--8

30-40

10-16

20-35

10b

Strong Scotch Ale

1998

 

18.0-21.3

     

6.6-8.5

   

20-49

10b

Strong Scotch Ale

1997

 

18-21

     

6.2-8

   

20-100

11a

Classic Irish-Style Dry Stout

1998

     

2-4

 

4.1-5.4

   

79+

11a

Classic Irish-Style Dry Stout

1997

     

2-3.5

 

3.8-5

   

150+

11b

Foreign-Style Stout

1998

         

6.1-7.6

   

79+

11b

Foreign-Style Stout

1997

         

6-7.5

   

150+

11c

Sweet Stout

1998

 

11.3-14.0

     

3.2-6.4

   

79+

11c

Sweet Stout

1997

 

11-14

     

3-6

   

150+

11d

Oatmeal Stout

1998

         

3.8-6.1

   

39+

11d

Oatmeal Stout

1997

         

3.8-6

   

80+

11e

Imperial Stout

1998

 

18.8-22.5

 

5-8

 

7.0-8.9

   

39+

11e

Imperial Stout

1997

 

19-22.5

 

4-7.5

 

7-9

   

80+

12a

Traditional German-Style Bock

1998

     

5-6

 

6.4-7.6

 

15-30

30-59

12a

Traditional German-Style Bock

1997

     

4.5-6

 

6-7.5

 

20-30

80-120

12b

German-Style Helles Bock / Maibock

1998

         

6.4-7.6

   

8-20

12b

German-Style Helles Bock / Maibock

1997

         

6-7.5

   

10-20

12c

German-Style Doppelbock

1998

         

6.6-7.9

   

24-59

12c

German-Style Doppelbock

1997

         

6.5-8

   

30-120

12d

German-Style Eisbock

1998

         

8.7-14.4

   

35-99

12d

German-Style Eisbock

1997

         

8.6-14.4

   

42-200

13a

Munich-Style Dunkel

1998

     

4-5

 

4.8-5.4

   

33-39

13a

Munich-Style Dunkel

1997

     

3.5-4.5

 

4.5-5

   

40-80

13b

German-Style Schwarzbier

1998

               

49-59

13b

German-Style Schwarzbier

1997

               

100-120

14a

Munich-Style Helles

1998

 

11.0-12.5

     

4.8-5.6

 

4-5.5

8-11

14a

Munich-Style Helles

1997

 

11-13

     

4.5-5.5

 

3-5

7-14

14b

Dortmunder / European-Style Export

1998

     

3-4

 

5.1-6.1

   

6-10

14b

Dortmunder / European-Style Export

1997

     

2.5-3.5

 

5-6

   

8-13

16a

American-Style Lager

1998

     

2-3

 

4.1-4.8

   

4-8

16a

American-Style Lager

1997

     

1.5-2.5

 

3.8-4.5

   

5-10

16b

American-Style Light Lager

1998

     

1-2

 

3.6-4.5

   

4-8

16b

American-Style Light Lager

1997

     

0.5-2

 

3.5-4.4

   

5-10

16c

American-Style Lager/Ale or Cream Ale

1998

     

1-3

 

4.3-5.7

   

4-10

16c

American-Style Lager/Ale or Cream Ale

1997

     

1-2.5

 

4.2-5.6

   

4-14

16d

American-Style Premium Lager

1998

     

3-4

 

4.6-5.1

 

2-6

4-12

16d

American-Style Premium Lager

1997

     

2.5-3.5

 

4.3-5

 

2-8

5-16

16e

American-Style Dark Lager

1998

         

4.1-5.6

 

14-25

28-50

16e

American-Style Dark Lager

1997

         

4-5.5

 

10-20

20-80

17a

Vienna-Style Lager

1998

     

3-5

 

4.8-5.5

   

16-24

17a

Vienna-Style Lager

1997

     

3-4.5

 

4.8-5.4

   

16-30

17b

German-Style Marzen / Oktoberfest

1998

   

1.012-20

   

5.1-6.0

 

5-15

8-30

17b

German-Style Marzen / Oktoberfest

1997

   

1.012-120

   

5.3-5.9

 

4-15

10-35

18a

German-Style Kolsch / Koln-Style Kolsch

1998

1.042-48

10.5-12

1.008-12

2-3

3.8-4.2

4.8-5.2

20-32

3-5

6-10

18a

German-Style Kolsch / Koln-Style Kolsch

1997

1.042-46

10.5-11.5

1.006-10

1.5-2.5

3.8-4.1

4.4-5

20-30

3.5-5

8-14

18b

Dusseldorf-Style Altbier

1998

     

2-4

 

4.6-5.1

   

22-37

18b

Dusseldorf-Style Altbier

1997

     

2-3.5

 

4.3-5

   

25-65

19a

Berliner-Style Weisse

1998

     

1-2

       

4-8

19a

Berliner-Style Weisse

1997

     

1-1.5

       

5-10

19b

German-Style Hefeweizen . Hefeweissbier

1998

         

5.0-5.6

   

6-18

19b

German-Style Hefeweizen . Hefeweissbier

1997

         

4.9-5.5

   

8-16

19c

German-Style Dunkelweizen

1998

         

4.8-5.5

   

32-45

19c

German-Style Dunkelweizen

1997

         

4.8-5.4

   

35-95

19d

German-Style Weizenbock

1998

 

16.5-20.0

     

7.0-9.6

   

10-59

19d

German-Style Weizenbock

1997

 

16-20

     

6.9-9.3

   

14-120

20a

Bamberg-Style Rauchbier

1998

       

3.4-3.8

4.3-4.8

   

20-39

20a

Bamberg-Style Rauchbier

1997

       

6-4

4.3-4.8

   

20-80

21a

Fruit and Vegetable Beer

1998

     

2-8

 

2.5-12.1

   

10-99

21a

Fruit and Vegetable Beer

1997

     

1.5-7.5

 

2.5-12

   

14-200

22a

Herb and Spice Beer

1998

     

2-8

 

2.5-12.1

   

10-99

22a

Herb and Spice Beer

1997

     

1.5-7.5

 

2.5-12

   

14-200

23a

Specialty Beer

1998

     

2-8

 

2.5-12.1

   

2-197

23a

Specialty Beer

1997

     

1.5-7.5

 

2.5-12

   

3-400

24a

California Common Beer

1998

 

10.0-13.8

 

3-5

       

16-33

24a

California Common Beer

1997

 

10-14

 

3-4.5

       

16-40

25a

Sparkling Traditional Mead

1998

1.050-100

12.5-25.0

       

N/A

N/A

 

25a

Sparkling Traditional Mead

1997

1.050-90

12.5-22.5

       

0

0-4

 

25b

Still Traditional Mead

1998

           

N/A

N/A

 

25b

Still Traditional Mead

1997

           

0

0-5

 

25c

Sparkling Braggot

1998

1.050-100

12.5-25.0

       

N/A

N/A

 

25c

Sparkling Braggot

1997

1.050-90

12.5-22.5

       

0

0-4

 

25d

Still Braggot

1998

           

N/A

N/A

 

25d

Still Braggot

1997

           

0

0-5

 

26a

Sparkling Melomel

1998

           

N/A

   

26a

Sparkling Melomel

1997

           

0-15

   

26b

Still Melomel

1998

           

N/A

   

26b

Still Melomel

1997

           

0-20

   

26c

Sparkling Cyser

1998

           

N/A

   

26c

Sparkling Cyser

1997

           

0-15

   

26d

Still Cyser

1998

           

N/A

   

26d

Still Cyser

1997

           

0-20

   

26e

Sparkling Pyment

1998

           

N/A

   

26e

Sparkling Pyment

1997

           

0-15

   

26f

Still Pyment

1998

           

N/A

   

26f

Still Pyment

1997

           

0-20

   

27a

Sparkling Metheglin

1998

           

N/A

   

27a

Sparkling Metheglin

1997

           

0-15

   

27b

Still Metheglin

1998

           

N/A

   

27b

Still Metheglin

1997

           

0-20

   

27c

Sparkling Hippocras

1998

           

N/A

   

27c

Sparkling Hippocras

1997

           

0-15

   

27d

Still Hippocras

1998

           

N/A

   

27d

Still Hippocras

1997

           

0-20

   

28d

Specialty Cider

1998

         

5.9-14.0

     

28d

Specialty Cider

1997

         

5.8-14