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I make a relatively quick oatmeal bread (with bread, whole wheat flours and old-fashioned oatmeal); it calls for instant/fast rise yeast. I am wondering how to make it rise a bit more than it does....

tovah
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    Welcome Tovah, we need more information to help. Please edit your question to include the recipe and instructions. – Debbie M. Oct 31 '20 at 18:43
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    The whole wheat flour and oatmeal will make a bread more dense than a bread made from all white flour. – csk Oct 31 '20 at 20:39
  • A pinch of ginger might help : https://cooking.stackexchange.com/q/12084/67 – Joe Dec 02 '20 at 21:10

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That depends whether it still needs to be 'quick'. You can autolyse your flour, which will help the bread to rise. https://www.kingarthurbaking.com/blog/2017/09/29/using-the-autolyse-method This is just adding water to the flour - no yeast - then adding the yeast later in the process.

However this will add time.

You can possibly increase temperature, i.e. use a warm place. Essentially your yeast converts sugar into carbon dioxide and alcohol (which burns off). The carbon dioxide gas makes the loaf rise. Your yeast species probably works fastest around 32-35C.

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(SC in that graph)

A lower temperature will mean slower activity, so everything else being equal 1 hour at 32C will give much more gas than 1 hour at 25C. Fast rises can lead to voids in the loaf, so that's something to bear in mind.

If your bread has no added sugar (you don't mention this), then the yeast will not have much to work on. Your options here are to add (more) sugar or to add a flour improver containing amylase, which breaks down the complex carbohydrates in flour into sugar. Other flour improvers contain ascorbic acid (vitamin C), which helps strengthen the gluten network.

thelawnet
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One thing that limits the effective rise is if you knock any air out of the dough late in the process. This means you should avoid transferring it between containers after the final rise. This is especially true for high hydration doughs. That's a problem if you rely on baking in a preheated dish.

Chris H
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One thing is if you have yeast, give it 30 minutes to settle in water before adding to the dough. Give it a chance to proliferate.

LazyReader
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    This won't make it proliferate - you need to add a small amount of sugar to the water to get the proliferation to happen. You can also do it by adding flour, such as when making a sponge before making the bread, or other nutrients such as vitamin c and soy protein. – bob1 Nov 02 '20 at 20:54