I have been setting up Breww and in our recipe building I am not able to add an ingredient from the stock items in a different unit than what I purchase pack size unit is. For example I purchase Lactic acid by the gallon and when I add it to the Mash tun during mash-in I use Milliliters for the volume of the addition. I have to do the conversion on my own to add it to the batch. If I add 100ml of acid to something that is a very small decimal of a gallon to put it into the recipe. When my team looks at that they look at me like I am nuts and want to know the realistic amount in ml. I then have to write it into the notes. I think this would be a huge timesaver
Thanks for putting this forward, Landon. I can certainly see how this would be useful.
If anyone else would find this useful, please give this a vote using the button in the top-left 
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I would love to see this. We often buy drums of liquid product from suppliers in kg, but we use them in recipes volumetrically (L, ml). Pricing from the supplier is tied to the weight, but it’s not practical for brewers to have to convert the volume used back to weight before it’s used by a recipe. A function where we can input a formula for conversion rate would suffice. Purchase unit = kg. Recipe unit = L. If product density is 1.050, then we know that the volume in L is; kg/1.050=L
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Breww already knows the conversion rate of any volume unit to any other volume unit (e.g. ml to US Gallons), so that part should be totally possible to build.
A conversion between a weight and volume, would need you to enter a custom formula (as you’d said) and this would add a huge amount of complication. Given this complexity and how uncommon this scenario is, I don’t see this (weight/volume conversion) being something we get to soon, in all honestly. I hope this is understandable.
I’d suggest in the meantime tracking the stock how you’d like to use it in Breww (i.e. in L in this case) and so it’s only the supplier’s PO that shows a differing unit. I expect they’ll be able to understand what is meant by your PO, even if it’s in L rather than kg. Additionally, you can set the suppliers’s SKU and quantity so these show on the PO document for them to help ensure they understand what you’re ordering.
Cheers
It’s a common scenario for us. We’ve pressed our supplier to provide pricing in L, but they rarely if-ever do it. This wasn’t an issue, as our previous management software had the unit conversion option. I’m ignorant to the software complexity of it, but I know it’s possible!
Thanks for the reply, Augus. I’m sorry if I’m missing something, but why does the supplier need to charge in Litres for you to use Litres in Breww? You should already be able to enter this reasonably well into Breww without needing specific conversion features, as you can enter any supplier pack size you need and enter their SKU to help make sure they understand what you mean.
Let’s say that the supplier sells you Flavouring ABC in 10kg tubs, but you want to track this in Litres. You could create a stock item in Breww named “Flavouring ABC”, which is tracked in Litres.
Then add supplier details (in the “Suppliers” tab when viewing the stock item) like this:
In this example, I’ve entered the supplier pack size at 10.5 (as in your example of 1L = 1.05kg), and to make it clearer to the supplier, I’ve entered their SKU as 10kg (SKU: ABC123) - note that I’m assuming their SKU is ABC123.
Next, when creating a purchase order, say you’re buying three tubs of 10kg, you can enter the “Supplier quantity” of 3 and Breww will automatically calculate that this is 31.5 Litres (30kg). A bit like this:
And then, on the purchase order PDF, it would show like this, which shouldn’t cause your supplier too much confusion (especially if the pricing matches what they expect), but when you receive the 30kg, Breww will treat it as 31.5L.
I hope this makes sense. Can you let me know if this doesn’t solve what you’re looking for?
We’ll still keep this request open for future implementation as the original request was from a slightly different point of view and would certainly benefit from entering a formula for conversion
There are some raw materials that is more convenient to show in grams during the brewing, but in the stock it’s better to show it in Kilograms for ease of reading and maintaining. For example minerals and hops. I would like to have the option to show a specific raw materials in different units in each section of the software, so if I’m using 150 grams of Gypsum, and I don’t want it to be written in the stock Items as 25,000 gram, but as 25 Kg.
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