Recently I moved house and had to also change some of my brewing equipment along the way. \n\n\n\nWhen I brewed my latest batch using my new (old) set up, I noticed that my wort's Original Gravity (OG) was way off what it should have been. \n\n\n\nSo, being a humble homebrewer, I decided to go back to basics and hunt out the reason for this.\n\n\n\nA lower Orignal Gravity than anticipated is due to inefficiency in the brewing process. This can be from miscalculations in the recipe, ingredients used, as well as poor mashing and sparging techniques. Often, there is just a misunderstanding as the recipe doesn't match the brewing equipment, so the OG is actually correct.\n\n\n\nThere is no one answer to why you may be missing your OG, so if you are struggling with the same thing, read on until you get that 'ah-ha!' moment\n\n\n\n\n\n\n\nHow to fix wort with a low original gravity right now\n\n\n\n\n\n\n\nRight, first thing is first. \n\n\n\nYou are probably reading this because you are standing with your phone in one hand, a hydrometer in the other, staring down into a disappointingly sugar-free wort. \n\n\n\nWell, perhaps not totally sugar free. \n\n\n\nSo, before we figure out WHY this happens, let's talk about how you can fix a low original gravity in your wort before you lose too much daylight.\n\n\n\nLuckily, fixing wort that hasn't had 'enough' sugar released into it is relatively easy. All you have to do is to add more fermentable sugars which your yeast can use later on during your pitching phase.\n\n\n\nA great source of fermentable sugar, which you may have lying around, is Dry Malt Extract (DME). Alternatively, if you don't have any or can't get to your local home brewing supply store, you can use regular sugar.\n\n\n\nHow to raise your OG using DME\n\n\n\nWhat you need to do is to measure the difference between your estimated OG and your actual OG. You then multiply that difference by 1000 and this will give you the \u2018points\u2019 you need to raise your wort\u2019s specific gravity by.\n\n\n\nFor example, if your target OG is 1.065 and your actual OG is 1.042 you need to change the density by 23 points ( 1.065 \u2013 1.042 x 1000 = 23).\n\n\n\nThis means that you need to add a quantity of DME which is equivalent to 23 points per gallon of DME. Right, are you confused because I was?\n\n\n\nWhat this means is that we need to know more about DME and how it relates to Specific Gravity.\n\n\n\nSo, DME has a potential of 1.046 and will add 46 points for every pound of DME added to your wort. So, in our case we only need 23 points, so divide 23 by 46 and you get 0.5 or half a pound of DME.\n\n\n\nOf course, if you are brewing more than a gallon of future beer, you need to adjust those sums accordingly.\n\n\n\nUsing regular sugar will work in the same way.\n\n\n\nDisclaimer: The above fix is only really valid assuming that everything else in your process is accurate. What I mean to say is, did you really miss your OG, or does it just appear that way because of other factors. \n\n\n\nIf you really want to know why you have missed your target OG, and perhaps are doing it consistently, you need to check a few things with your brewing system and brew day.\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n Plan your next Beer Creation?