Why Are My Og's Higher Than Calculated

[GrumpyPaul]

I put down 3 different kits/extract and bits recipes on Friday night. I used Ians spreadsheet to and in all three my actual OGs are higher than those calculated. Any ideas or suggestion on what I did wrong?

Heres the 3 Recipes.

Orange & Coriander Wheat beer.

1 can Tooheys Classic Dry Lager
500g Dried Light Malt
1.1 ltr Can Coopers Liquid Wheat Malt
250g Crystal
Amarillo 10g @ 20mins
Amarillo 10g @ 10mins
Amarillo 10g @ 0mins
25g Coriander seeds
zest annd Juice of 3 oranges
WB06 yeast
Expected OG according to spreadsheet = 1048
Actual OG = 1056

Recipe 2 Styrian G Choc Coffee Dark Ale

1 can Tooheys Classic Dry Lager
750g Dried Light Malt
400ml expresso coffee
120g light Crystal Malt
250g Chocolate Malt
120g Dark Crystal Malt
20 g Styrian Golding Hops @ 45 mins
10g Styrian Golding Hops @10mins
Nottingham yeast
Expected OG according to spreadsheet = 1051
Actual OG = 1070

Recipe 3 Nelson Sauv Crystal Ale
1 can Tooheys Classic Dry Lager
750g Dried Light Malt
120g light Crystal Malt
120g Dark Crystal Malt
1kg Honey
10g Nelson Sauvin Hops @ 15mins
15g Nelson Sauvin Hops @ 5mins
10g Nelson Sauvin Hops @ 0mins
US05 yeast
Expected OG according to spreadsheet = 1048
Actual OG = 1056

Any thoughts on why the actual OGs are different or comments on these recipes would be appreciated

 

[ekul]

maybe you haven't mixed the extracts in thoroughly so the sugars are sitting down the bottom of the fermenter, causing the OG to appear higher.

 

[glaab]

often caused by having extract in the tap not mixed properly
edit; too slow again

 

[cdbrown]

Or not putting as much water into the fermenter.

 

[GrumpyPaul]

All 3 are spot on 23 litres and I always run a bit thorugh the tap first before taking the sample.

 

[MHB]

Just takinga quick look at your first recipe

Assumingabout a 65% yield from the Crystal I get 1.056, which is what you got.

The onlything I can think of is that can of Coopers wheat, its 1.5 Kg at about 80%solids so it contributes 1.2 Kg of extract, did you put the mass or the volumeinto the calculation?

MHB

 

[ianh]

Hi

I would expect the spreadsheet calculated OG to be pretty close as they have been compared to those calculated by other software and I don't know of any problems. As suggested could be mixing problems.

However there is a problem in that most software does not calculate FG correctly and the K & E spreadsheet is no different. Where Malts and grains are used the FG's should be good, but as in recipe 3 with the honey the FG calculated will be higher as honey is 100% fermentable and the spreadsheet does not allow for this (neither does Beersmith, Promash). I have just done a BIAB spreadsheet that allows for the fermentability of adjuncts.

cheers

Ian

 

[GrumpyPaul]

Thanks Ian

I didnt think for a second there was anything wrong with the spreadsheet. I always assume i am doing something wrong (or at least not quite right).

I was accurate with most of the wieghts and measures but no so in bringing the hop boil up to 1040. I just took a guess out of the total dry malt to get the amount prescribed. could that make a difference to the end result. Total ingredients are right but not order and timing that they are put????