Can you double a recipe?

[splyman]

I have a 5 gal. recipe that I want to make into a 10 gal. recipe. Can I simply double it or will I need to make a few adjustments to make it work?

Thank you for your help,
Scott

 

[BierMuncher]

Doubling up is just fine. I'd advise getting BrewSmith to help formulate your recipes as well as keep track of past winners.

 

[samc]

Doubling does not account for lower efficiency of larger grain amounts. System adjustments might be needed.

 

[weirdboy]

Also, it assumes you have the capacity to boil the full volume in both cases with the same boil-off rate. If those are different your gravity during the boil will be different as well, which changes your hop utilization.

 

[JonM]

You can double a recipe, triple it, halve it, reduce it by 40%, etc., whatever you like. With the qualifications mentioned above, everything scales.