# Questions tagged [conversion]

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### Why has the Specific Gravity to Potential Alcohol conversions changed?

Ok, so I have implied but not said outright that I have been making wine for almost 30 years, but what I have also implied but not outright said is that there has been a break in that amateur ...
46 views

### Calculating mash conversion efficiency using Brewers Friend calculator

Can someone please help me out with how to properly calculate conversion efficiency using the Brewers friend calculator (found here and set to conversion efficiency: https://www.brewersfriend.com/...
89 views

### Where does this DME/LME come from in “How to Brew”?

I have a copy of the last (4th) edition of "How to Brew" by John Palmer. According to the book, DME yields 42 PPG (Points per Pound per Gallon), while LME yields 36 PPG. This is an estimation since ...
54 views

### Home brewing for undergraduate study

I am thinking of making a beverage out of locally available starch sources. My question is, is there a possibility to convert those starchy objects to fermentable sugars? And what type of yeast should ...
131 views

### Calculating Efficiency manually using metric system

Can someone please give me a hand calculating Mash Efficiency manually? I use mostly Gladfield malt along with some cara 'x's' and BeerSmith 3 but would like to calculate manually so I have a grasp ...
133 views

### Widget World to S30 Conversion

I understand that Widget world is no longer operating. I have had to get a Hamilton bard cylinder that uses an s30 thread. This is not compatible with the widget world devises. Can anyone tell me the ...
206 views

### What happens to remaining sugar when wine is converted to vinegar?

Say that I have a wine that still contains a substantial amount of sugar. If I start the process of converting the wine to vinegar by exposing it to oxygen, will the sugar continue to be converted to ...
657 views

### How is the conversion of raisin to tannin and acid?

It's hard to find tannin powder as there is no wine making supplies in my country. There, I'd rather use raisin as tannin substitute in my wine making process. However, I'm not sure how the conversion ...
14k views

### Leaf Hops to Pellet Hops

I've seen conversions of like.. add 10% when going from pellet hope to leaf hops. My question is probably numb nuts.. i.e., I see recipes that have leaf hops in them and I want to use pellet hops... ...
435 views

### Any drawback in heating the mash with grains in?

I do BIAB and in my constant search for ways to simplify my brew day I recently started to heat my mash with the grains already in. That is: I fill my kettle with the full water volume I'll be using (...
2k views

### Litres / Gallons conversion

Hope this doesn't sound like too daft a question... but I'm English and a noob so please humour me :) When I am reading recipes, brewing instructions, calculations, etc. from American documentation ...
467 views

### What is the effect of conversion efficiency on your brew?

I keep hearing about how we should try and keep our conversion efficiency high, but what exactly does it affect? Is a lower conversion efficiency beer bad?
963 views

### Can beta amylase eat sugars after alpha amylase?

A bit of background -- I brewed a pumpkin ale recently. The mash temp was maintained fairly high (well above 150F) for at least a full hour. The sparge was a disastrous 3-4 hour experience (despite ...
694 views

### Converting Hops in All-Grain to Extract Recipe

I have this All-Grain recipe that I'm converting to Extract. Do you basically just increase the hops until the IBUs match the original measurement? I've gotten the OG fairly close and the SRM is a ...
193 views

### Will Adding an Active Mash to a Non-Active Mash Get Enzyme Activity Started Again?

Background: A friend of mine does ten gallon batches of big beers, so has a lot of grain. After mashing, his technique is to fly sparge with 170 degree water. I understand this shuts-down enzymatic ...
6k views

### Is the iodine test for starch conversion pointless?

Looking around the web there seems to be a lot of mention of the use of the iodine (starch) test at the end of your mash. Is it actually useful (i.e. is it reliable)? There have been times when I ...
235 views

### Needs to be mashed

I recently had a debate with a brewing buddy of mine about malts that "need to be mashed". For instance victory malt is listed in Palmers "How to Brew" as being in the needs to be mashed column. I ...
8k views

### How do you convert between SRM and Lovibond?

For instance, if a grain is specified at 300 SRM, what is the equation to convert that to Lovibond? What is the equation to convert it back?
182 views

What is the step-by-step process for cereal mashing adjuncts? Please include temps and grain to volume ratios.
271 views

### What is conversion?

While answering another question, about mash temperature, the question about conversion and how long it takes came up. So what is conversion? I think we all know its the process of enzymes converting ...
36k views

### What is the conversion rate between dry malt extract (DME) and liquid malt extract (LME)?

Say I have a recipe that calls for 5 lbs of LME. How much DME would that be?