# Questions tagged [original-gravity]

Initial gravity of wort (prior to fermentation).

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### Gravity loss after settling?

Just made my second batch using an Anvil Foundry all-in-one brewing system. I used an immersion chiller to bring the wort down, but could only get it down to 82F (groundwater in Texas in August... ...
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### Bananas, Brewing, and Fermentable Sugars

So I have spent a few weeks going down the banana-wine rabbit hole. So, the things that I know Older (brown) bananas have more sugar Not all sugar is fermentable Banana skins can help break down more ...
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### Original Gravity too high for Saccharometer Scale

So I want to exceed the scale of my saccharometer scale, which goes up to 25 °P (1.106 SG). Now, I am a programmer and exceeding is my thing. So: As far as I understand, gravity is linear in nature. ...
3k views

### How does a yeast starter affect original gravity reading?

I've prepared a 1qt (~1L) yeast starter according to instructions from Wyeast.com. I didn't measure its gravity, but in theory it should be about 1.040. I am brewing a 5 gallon batch of high gravity ...
408 views

### How to measure starting gravity without a hydrometer

How would one go about calculating starting gravity without a hydrometer? I know that there is a way to mathematically determine this, which is what I'm looking for.
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### Under OG, and only 3 days fermentation

So, I'm brewing an all-grain batch of the Rogue Chocolate Stout Clone based on this recipe (https://www.homebrewersassociation.org/homebrew-recipe/rogue-chocolate-stout-clone/). I divided the recipe ...
98 views

### Having doubts about my first stout

I just had an issue with an oatmeal stout. I'm just starting to brew beer at home (BIAB) and I think I made some mistakes. I had my water at 80°C hoping for the decrease of temperature to 72°C when ...
280 views

### Fermentation time for APA with 1.080 OG

I brewed my first batch (APA) and while boiling I lost way too much water which resulted in higher OG. Expected was 1.050 but I got 1.080. I added Safale US-05 (1 pack) and left it to ferment at 20°C (...
135 views

### Final gravity too high

I have an IPA that I've brewed in five gallon batches before. OG at 1.065 and FG at 1.010. Those were hydrometer readings. I scaled it down for a one gallon batch, and pitched half a packet of yeast (...
12k views

### How Does a Hydrometer Work?

I know how to use my hydrometer, and I know what numbers to look at and write down on my brewing sheets, but I'm not sure what those numbers actually represent, or even what units I should use to ...
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### Really fast attenuation with starter. Is this to be expected

A little bit of background: I finished brewing a black IPA and pitched yeast around 5:00 on Sunday. Admittedly, the wort was a little warm (75F), because it was 9 degrees outside and I was in a ...
495 views

### How to calculate amount of water to add to lower OG to target

I have been using less water than needed in my partial mash recipes. For a target of 8 gal into 2 (5 gal) fermenters, I have been using 3 (+1 gal sparge) in the mash step and 2 gal for boiling ...
151 views

### ABV from one SG?

The most common way to calculate ABV (Alcohol By Volume) is through some correlation between Original Gravity (OG) and Final Gravity(FG). Is there any way to calculate ABV just from the current ...
93 views

### What's going on with these gravities?

I'm a new home brewer. Since Christmas I've brewed 5 beers, all of which have been drinkable. The first I didn't have a hydrometer, the second I accidentally put in twice as much carapils as I was ...
4k views

### Specific Gravities for Kombucha

The most-recent episode of Basic Brewing Radio has got me thinking about making Kombucha. What would be a typical OG (original gravity) and FG (final gravity) for a Kombucha?
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### Diluting beer after 11 hours of fermentation. What to expect?

Ended up with too high gravity wort. Since I was not prepared for this I didn't have enough sterile water to dilute the wort. I ended up pitching the yeast anyway and adding sterile water at 11 hours ...
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### Low OG, thinking it's the milling - thoughts?

I've recently made the move to a top tier system and have retired the trusty old turkey fryer with the objective of conducting some more tightly controlled brews over the next few years. I've done all ...
125 views

### How to get higher gravity

I am using 60kg undermodified 6 row barley for 300 litres, I performed 60 minutes rest at 64°C and 30 minutes rest at 72°C, but I got 12°Plato original gravity (1.048) after boiling. Please help me ...
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### Mr Beer sells Brew Max

Does anyone know what Mr Beer Brew Max is? Also what can be substituted for it?I am trying to raise my A.B.V. in my home brew. I ask because I need a substitute. It almost looks like very small pieces ...
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### Supplementing with ethanol? Is that a thing

I'm transferring my first white IPA to secondary tomorrow. It smells great, but there is one problem. A really low OG. I can only assume my protein rest wasn't sufficient to break down the proteins ...
2k views

### Adding Sugar before primary fermentation and a few associate Gravity Questions

I mentioned in a previous question that I am about to have a go at my first home brew. This was prompted when the brother-in-law's girlfriend gave me a beer kit for Christmas (Tom Caxton Real Ale). ...
197 views

### Can I fix a higher than anticipated OG after primary?

I just brewed a witbier that was way below the estimated preboil gravity of 1.49. I only got 1.34 in case you're wondering. I've never had that bad of an efficiency before. The grains came ...
413 views

### How important is it to hit a recipe's target OG? What if my OG is too high?

I just brewed a chai tea brown ale (recipe here) -- which has a target OG of 1.048 -- and ended up with an OG of 1.064. My efficiency for this batch hit 78%, which I presume is higher than the recipe ...
651 views

### Is this final gravity too high?

I brewed a Chocolate Oatmeal Milk Stout with an OG of 1.062. After 2.5 weeks of what seemed like active fermentation, it's only at 1.030. It's been at that for a week. It tastes like a it will be a ...
645 views

### What is the definition of post boil gravity and how is it different to OG?

What is the definition of post boil gravity and how is it different from original gravity - or are they both the same thing. Beersmith uses both terms but aside from the fermenter top up to me they ...
2k views

### What's the average loss of gravity after two days of fermenting?

I was just curious because I took what was supposed to be my OG two days after because my hydrometer came late. The reading seemed very low, 1.030, and I was hoping I lost at least .010 from the ...
267 views

### My OG is too low

I've just done a 5 liter all grain brew. The Original specific gravity is supposed to be 1050, but its 1020. What have I done wrong, and will the brew be OK. I thought that I had the grains properly ...
243 views

### Raising OG before pitching yeast

I am using an all-grain recipe for a Belgian ale. My OG came out to 1.052 rather than 1.081-5. What can I do to raise the OG before pitching the yeast? Will a pound or two of malt extract help?
129 views

### Question regarding which volume to use for OG calculation

My question is regarding which volume to use when calculating OG, and more importantly why. How to calculate the gravity points for a recipe is fine, but then according to BeerSmith at least, you ...
123 views

### Pilsner extract kit: why is the original gravity low?

I've just put the extract version of this in the fermenter: http://www.wagonbrewing.co.nz/panhead-port-road-clone?search=pilsner The gravity is 1.037 which seems way low. Dammit I don't want no weak ...
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### Proper target for dilution

I made a recipe that was supposed to have OG 1.062, FG 1.012 (ABV ~6.5%). I forgot to note the target volume in the recipe (just the pre-boil volume), and wound up with a wort with OG 1.077. I chose ...
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### Is delayed yeast activity normal?

I am working on a small batch, 1 gallon of Pale Ale. It came in a kit and the yeast was not labeled so I am not sure what kind it is. This is only the third batch I have brewed. On my first two ...
16k views

### What to do when gravity comes out too low?

We brewed a maibock (from an extract kit) and when we checked our OG it was significantly lower than it should have been. I mean like, really, really low. We decided to attribute this to the wort not ...
506 views

### Cider original gravity is 1.11. Why is it so high?

Bought a Mangrove Jack's brewing kit and some strawberry and pear cider. The cider I bought is supposed to be 4.7% but after following the instructions exactly and checking that the hydrometer was ...
875 views

### Adding water just after fermentation has started, wait, or not worth it?

I brewed this recipe last night: http://beerrecipes.org/showrecipe.php?recipeid=1254#sthash.U5JgSM6X.GnSCunwe.dpbs I don't think we added enough water and it looks like the OG is around 1.1 although ...
566 views

### What is the approximate batch size/OG limit for US-05 11g packet? Have I used enough?

I've started a brew with an OG of 1.065 in a 23L batch. I pitched a rehydrated 11g pack of US-05 and after 5 days I took a FG reading when I observed no bubbles after some time; it came out at 1.028 - ...
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### Can I decrease Original Gravity of the beer during fermentation process?

I am trying to brew 5 gal of Dunkelweizen. I used instructions from: Dunkelweizen I measured the OG of 1080 after cool down the wort. It should be 1050-1053. What should I do in order to decrease ...
2k views

### Can FG be higher than OG?

I "brewed" a beer that was described as "Chinese Rice Wine", but it is 50% grain so I will call it a beer! Recipe: 18 liter batch; 2.5 kg boiled Rice, 2 kg sugar, a cup or so of raisins and one ...
182 views

### What's wrong with my gravity?

I recently brewed an Imperial Red. It clocked in at around 1.072 on original gravity reading. My malt bill looked something like this: 12 lbs 5.0 oz Pale Malt (2 Row) US (2.0 SRM) 11 lbs Marris ...
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### Why is IBU/GU a good measure?

Since the FG is what measures the residual sugar in the final beer, why do we use OG, instead of FG, to calculate the ratio of the bitterness over the sweetness in final beer? How precisely is the ...
2k views

### How low an original gravity is too low?

I just brewed this extract IPA. I had 4.6 gal in the fermentor when I measured original gravity at 1.053 (@80 degrees), on the low end of the target range for 5 gallons (target 1.059, or 1.053-1.062)....
18k views

### Didn't hit gravity--how to calculate how much malt extract to add to the fermenter?

Lets say you were aiming for 1.047 but only hit 1.032. In a 5 gallon batch, how much malt extract would you need to add to the fermenter to bring it up to the desired gravity?
4k views

### Lots of trub affecting specific gravity readings?

I'm in the process of making a pretty big pumpkin beer, and just transferred to secondary. There was an incredible amount of trub -- probably 1.5 gallons out of a 5 gallon batch. I guess it was a ...
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### Improvements for Geordie Winter Warmer

I've just started a single can Geordie Winter Warmer kit and having read some negative reviews about this kit turning out "weak" and "watery" and like "beer flavoured soda water" I'm naturally having ...
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### Looking for process improvement suggestions

I just did my 4th brew, my OG was lower than expected, and I'm looking for help with process improvements. I'm doing an all grain process. I have an 8gal kettle, a 2gal kettle, and a 0.5gal kettle. ...
121 views

### Specific and generic questions from a first timer - size of fermenter, flavoring, gravity, sanitation

I just brewed my first ever German Weizen (using True Brew kit) on Saturday (today is Monday) and it's sitting in a plastic 6 gallon bucket (but there's only 5 gallons of it). I have some questions ...
5k views

### How to add DME to the wort

I typically use LME for my wort, with no prblems, but this time I am trying a slightly bigger beer and want to add DME to boost the OG. The one time I tried adding DME to my wort, I just dumped it ...
821 views

### Trouble Reaching My OG (Pre-Boil Was OK)

Last week I brewed an Arrogant Bastard clone. My pre-boil gravity was off by .001 so I was pretty happy with that... But my OG (post-boil) was off by .009! I thought that because my pre-boil gravity ...