I am using a numeric representation of beer versions similar to Engineering version control thingys. For each style there will be the individual brewer's version of the beer.
"10B 0-0-0-0 would be your base recipe.
10B 1-0-0-0 would be a change in malt
10B 0-1-0-0 would be a change in hops
10B 0-0-1-0 would be a change in yeast
10B 0-0-0-1 would be a change in something else
A fifth digit could be your evaluation of the change. Maybe a "+" if you
wanted to retain the change or a "-" not to attempt that particular change
This from having bounced the idea around with one of my homebrew homeboyz over the last few days. So the latest beer will be printed on the cap label thusly:
- ► 2011 (43)
- ▼ February (6)