I'm new to the whole baking thing, so I'm learning as I go along. In that regard, there may be a host of things wrong with my bread baking process, but I'm mostly curious at this point about my starter feedings. I don't really follow any rules aside from equal parts flour/water. How important is it to feed the starter in proportion to the starting amount? I've seen lots about a 2:1:1 starter:water:flour ratio or even 1:1:1, but I haven't really been doing anything like that. In most cases I just feed a static 40g flour/40g water each time; regardless of the starting volume, starter rises to double no problem and I make sure it passes the float test every time before I mix the dough.

I've baked 4 loaves unsuccessfully at this point, all have been flat with a large air pocket like this. My best guess is that this has to do with being under-kneaded but after doing some more reading I'm a little curious if there's any specific reason behind feeding a starter that much and if it could be contributing to my bread failures. Is my starter OK (i.e. I should look elsewhere to find the problem) or is this something worth changing about my process? Thanks!

  • How frequently is "each time"?
    – Cos Callis
    Commented Aug 20, 2018 at 16:55
  • Once, sometimes twice a day. Minimum 12 hours between. Usually feed in the mornings and if the starter looks hungry or has "collapsed" to its original height, i'll give it an extra feeding in the evening. I try to watch it closely and play the feedings by ear. Commented Aug 20, 2018 at 17:06

3 Answers 3


My early sourdough loaves looked like that. Now they are less flat and have defined hikes through the crumb rather than a great interlinked cavern. The things that changed:

  • my starter became more mature and stable. It lives in the fridge and gets fed 2-3 times a week when I bake. I keep about 250g which gets 100g taken out and replaced for my standard loaf and 180 g on loaf-and-pizza days, plus another 60g at random times when my partner steals some.
  • I’ve learned that in my kitchen a sourdough loaf takes a long old time to rise. Sometimes I bake it underproofed because that’s better than not having bread, but really mine needs 24 hours from start to finish.
  • I gave up kneading. I read all the methods, watched all the videos... I slammed that dough down 300 times per loaf, kneaded for at least ten minutes, stretched and folded... and never got smooth elastic dough as advertised. Instead I got exhausted sticky dough that was a nightmare to handle and didn’t rise all that well. I’ve come to the conclusion that if dough has enough time it doesn’t require kneading. Now I mix the starter with water, mix in the flour with a rice paddle, mix a bit more about ten minutes later and leave alone for about 22 hours. I might give it a poke if I’m bored, but that’s more for me than the bread.
  • Shaping: I used to do a lot of folding/rolling up of dough before I put it in a proving basket for the last hour or two. Now I just kind of punch it down and gather it back up and dump it into a well-floured basket.

I don’t have a current loaf to take a pic to prove my success (just back from Stratford, flying to Stornoway in the morning, had to actually do a discard feed for 1st time this year) but essentially my mantra would be ‘chill and give it time’.

  • This really helped me out. Allowing for an overnight proof gave me a successful loaf! It's so strange, every recipe I can find online says to proof for 4h or so and that you're good from there, but there's no mention of "this could take up to 12h if your kitchen isn't warm enough". I'm still trying to alter variables to achieve the 4h rise time but I just can't seem to get there. It's not that I need to be in a rush, but I want to know what's different about my process/ingredients thats causing it to take longer. Can the starter be "trained" to be more active, more quickly? Commented Nov 6, 2018 at 6:33
  • That might be the basis of a new question, because the 24 hours suits my life I’ve settled on that and not sought to speed it up. This site emphasises the importance of monitoring the temperature of your dough and controlling the temp of water you add to control the rise time, but their whole process takes around 29 hours. This site gave me a lot of my basics, but again, it’s at least a 16 hour process. I’m glad to have helped somewhat though. :)
    – Spagirl
    Commented Nov 6, 2018 at 9:09

If you are feeding your starter by discarding half of it then adding 40g each of water and flour, then you are feeding it in a 2:1:1 ratio. To see why, do a thought experiment: You start with some amount of starter — let's say 100g. You discard half, leaving 50g. You then add 80g (40+40). That wasn't 2:1:1 (you're 30g short on starter), but you now have 130g. Repeat the process next feeding, half is now 65g, closer to the 80g. Next time it's 145g... each time you feed it, you get closer and closer to that 2:1:1 ratio. The same thing happens if the start was to large to start with — the process you're using will get you to 2:1:1.

Alternatively, another way to do it is to know how much your jar weighs; say it's 150g. Then if you want 160g of starter, half of that is 80g of starter. You put the jar + starter on the scale and discard until you're down to 150+80=230g. Then you add the 40g each flour & water, giving 2:1:1 (and a total starter weight of 160g).

Also, nothing magical about that ratio: for example, I use more flour (45g) than water (30g) when feeding mine — it means it can go longer between feedings (more flour = more food; drier = consumes it slower).

Starter problems normally manifest as either does not rise or not the desired flavor — you're clearly getting rise, from those air pockets. There are a couple things that may cause this:

  1. After your first rise (not always doubled with sourdough), partially deflate it. Press it down, even knead it a little. You want to get any big bubbles out. Note that sourdough traditionally has some large holes in it.

  2. If you don't get the starter mixed in well, you can have uneven rise, then portions that got more starter will get huge holes.

Other things can contribute too, like overproofing (at least to the going flat — eventually the sourdough bacteria start eating away the gluten), way-too-warm rise temperature, moisture issues (wrong amount of water), etc. I would guess that you might have too much water in your dough (if its going flat) or that you're overproofing it (put it in the oven earlier). Of course, underproofing can also get you uneven bubbles, but I don't see any sign of the crust bursting, though I'm not sure if that's actually a picture of your loaf or not.

  • This is amazing, a ton of super helpful and thorough insight here. To your first point, I haven't been discarding consistently and when I do it's not an exact amount :P totally get what you're saying though. I will definitely give the knocking back a try, haven't been doing that but I've seen it mentioned in some other posts. I mix my starter with water before adding flour and autolyse so I don't think dispersion is the issue. Also, not my loaf :) but similar looking. I appreciate all the advice, looking forward to my next attempt. Commented Aug 20, 2018 at 19:22
  • 1
    @NathanBrown BTW, have you made bread with commercial yeast? If not, you might want to start there — so much less variability. And most all of the techniques carry over.
    – derobert
    Commented Aug 20, 2018 at 19:26
  • I make pizza dough in the breadmaker that we have but aside from that I have not, probably would have been a good starting point though lol. My wife (a much more naturally-talented baker than me, but not interested in the science like me) told me that making a starter would be too hard so naturally I took that as a challenge haha. As for my starter, I gave some to a coworker and he was able to bake a successful loaf so I'm thinking some other part of my process needs some work. Unsuccessful attempts are frustrating but ultimately part of the fun. Commented Aug 20, 2018 at 19:32
  • 1
    @NathanBrown Sounds like you should also be able to get some instruction from your coworker. Probably much easier in person vs. typing on an Internet site.
    – derobert
    Commented Aug 20, 2018 at 19:35

I used to use most of my starter with my weekly bake, then progressively double the starter each day from a very small base until my next bake - no discarding means no waste! I usually knew if my starter was well past needing a feed because it would develop an alcoholic smell and a little clear liquid around the edge - alcohol is a byproduct of the fermentation and shows up when almost all the flour has been consumed by the yeast. When left too long without feeding, the yeast will drown in it.

The ratios aren't as important as you think - just try to be reasonably consistent. From memory, a more liquid starter favours lactic bacteria, whereas a 'drier' starter favours another type of bacteria (these bacteria are what put the sour into sourdough - not the yeast itself).

Punch down after the first rise and see if that helps with the distribution of air pockets - though I suspect that has more to do with the mixing in of the starter into the flour. Try cutting the starter up into small cubes (if it is relatively dry) and mixing them in that way to get a better distribution in the dough. Also mix the salt evenly through the flour as it can kill the yeast in concentrated amounts (and check how much salt you are adding).

If you are having problems with the speed of proofing you can put the dough in the fridge (cover in cling form) to slow it down (this also adds to the flavour as it gives the flour more time to break down).

Best of luck!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.