scaling down a recipe on beersmith

[aussie brewer]

Hi, im trying to halve a recipe on beersmith, I used the scale function and it changes the ratio of malts but keeps the gravity and ibu the same.
I tried entering half of everything in and the ibu's are too low.
Anyone have a solution for this? cheers

 

[FunkedOut]

You can fix the malt ratios with the grain percentage tool.
You can fix the IBUs with the IBU tool.
These two buttons are off to the right of the ingredient list.

 

[aussie brewer]

Thanks funkedout

 

[Oginme]

If you are trying to scale a recipe using the same equipment profile as the original, realize that the losses in the equipment profile stay constant, so it affects the process losses to ending volume ratio changes. This loss affects the IBU calculation. You can overcome this by first clicking on the 'match original gravity, color, and bitterness' box when you scale the recipe. Note that when you do this you also affect the expected mash efficiency, since BeerSmith defines the amount of sugars drawn from the mash by the brew house efficiency. With a greater amount of process losses, the program will blindly raise the mash efficiency higher than your process will actually produce in order to satisfy the ending demand of 'x% of the sugars will be in the fermenter' as defined in the equipment profile.