Initial gravity of wort (prior to fermentation).

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6
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7answers
17k views

Why is my starting gravity low?

In the fall of 2011 I made the leap from extract/partial kits to all-grain kits. I'm enjoying AG, but my SG is continuously below the expected. I have brewed 5 AG kits and 4 have had a low SG. My ...
5
votes
1answer
431 views

Does white honey have greater effect on gravity?

A few weeks ago I made my first mead (actually a braggot). I ordered a 12 lb bucket of raw honey. To my surprise, when I opened it the honey inside was a creamy, almost foamy opaque white. It didn't ...
3
votes
2answers
539 views

Does a malt “late addition” affect OG?

I'm following a recipe from a book for an IPA that calls for the following (simplified) steps: Boil water (3G/11L) Add Light DME (1lb/450g) & return to boil Add hops At 45 mins, add LME (6.6lb/...
2
votes
1answer
111 views

adding 1 g to 5 g recipe - keep OG the same

So i've got a 5 gallon partial mash kit(OG 1.065), and I am looking to add around a gallon to increase my yield for the session. What formula could I use to know how much extra dme to use to keep ...
1
vote
3answers
3k views

Formula for make up water / gravity change

If I were to put 3.5 gallons of 1.060 wort into a carboy, and use 0.5 gallons of water to top off to 4 gallons: - What could I project that gravity would be? - Anyone have a good formula, even if just ...
0
votes
2answers
546 views

OG higher w/ full vs. partial boil?

I've done 2 full boils and probably 10 partial boils since I've started homebrewing. In both full boils, my OG has been significantly higher. Most recently, by .02 (expected 1.062 measured 1.082). ...
4
votes
3answers
10k views

When to add DME if you miss your starting OG?

My family was very nice to me this Christmas and I got a bayou classic burner and an 32qt. pot with 2 ports and a bazooka screen as well as an immersion chiller. I had built a 10 gallon mash tun over ...
6
votes
2answers
273 views

Why measure gravities?

I've brewed a good dozen batches of beer from kits, extract, extract+grain, and now all-grain, and I've never measured gravities. Why measure gravity, besides to know what you're getting? Is there any ...
5
votes
3answers
1k views

is it possible to estimate OG from nutritional information?

After many batches of beer, I've decided to try a hard cider. The recipe I have does not give a predicted OG, however all of the ingredients list the amount of sugar in the nutritional information. ...
5
votes
1answer
726 views

Curiously high OG after first all-grain batch

I conquered my first all-grain batch this weekend, and after some early problems constructing my cooler mash tun, it went off without a hitch. It's a Northern Brewer all grain kit, and the recipe ...
4
votes
1answer
3k views

Why is my OG so low?

I brewed this recipe but substituted crystal 80 for the crystal 15. I did the full mash option, and I doubled all the ingredients and did a 10 gallon batch. I got an OG of 1.045 at 75F so adjusted ...
7
votes
3answers
2k views

Why was original gravity high by .010?

Recently brewed a dry stout extract kit. Boiled 5 gallons on propane. Steeped 2 lbs of roasted malt, crystal malt and flaked barley at 155-160 F. Extract was 6.6lbs of Coopers Light LME. As usual, ...
4
votes
2answers
690 views

Undershooting OG in all-grain brewing

My last few all-grain batches have been under the expected OG at least as far as the recipe is concerned. The beers still taste good and all, but I'd like to get my efficiency up. For example, my ...
13
votes
1answer
973 views

Original Gravity: Calculate or measure

I've been told that for extract brewing it's best to simply calculate the original gravity instead of measuring it. Is this correct? What are the pros/cons either way? What about with extract+...
4
votes
3answers
2k views

Brewed an Oatmeal Stout and the gravity did not drop as much as predicted, should I re-pitch or add yeast nutrients/energizer?

I just brewed an oatmeal stout see recipe details here and I have a question about missing Orignal and/or Final gravities. The OG was supposed to be 1.061 and the FG 1.016. I brewed and got an OG or ...
1
vote
1answer
334 views

Can I retroactively deterimine my OG with a refractometer?

Brewed a big Belgian beer last week. And using my refractometer (poorly, as it turns out), I wasn't able to get a solid reading of the OG. Now a week later I've taken a sample of the beer and want to ...
5
votes
2answers
945 views

Using Burnt Caramel / Brewer's Caramel in Recipes

Has anyone worked with using either burnt caramel or brewer's caramel in their recipes? I have read a few places that Fuller's is known to use this to increase the SRM of some of their product line, ...
4
votes
2answers
5k views

Stuck or Slow Fermentation

So I have my first possible stuck fermentation. First, my recipe: http://hopville.com/recipe/166971/extra-special-strong-bitter-english-pale-ale-recipes/shoals-pale-ale-clone I pitched with two ...
16
votes
1answer
13k views

[WIKI] How Do You Calculate Original Gravity?

This is a community wiki post. Anybody with more than 100 reputation can edit it. You may also post your own answer. I get no reputation if you vote the question up or down, however, please vote up if ...
4
votes
2answers
191 views

What effect would using less LME than called for have?

I just brewed a recipe for a biggish beer that calls for 6.6 lbs of light LME and 2.75 lbs of light DME. Given that I always mess up at least one thing when I brew, I measured out 2.75 lbs of DME and ...
5
votes
2answers
2k views

What causes Original Gravity to be lower than it should be?

I am an extract brewer and every brew I have done the OG was lower than the intended OG, (my OG is always lower than the recipe's OG). For example I brewed the stout recipe below from beertools.com ...