Get an expanded polystyrene crate [1], the sort of things market traders use, a seedling mat and a relay thermostat. Wire together and you have a reasonably accurate climate controlled box. The box will be the most expensive thing, but I bought a very large one (too large, to be honest) and it was about £35. For a single loaf, you only need an interior volume enough to fit something a standard plastic food container [3]. A 4L container will barely do a 1kg batch, so size up.
This is essentially the design that Noma use in their fermentation book [2]. Hint: you can see the design in the preview on Google Books (page 42).
I set mine around 26-27C for bread, seems to work quite well. I've not bothered to measure how accurate the setpoint is.
[1] https://hydropac.co.uk/wp-content/uploads/2017/02/deluxe-1.j... [2] https://books.google.co.uk/books/about/The_Noma_Guide_to_Fer... [3] https://www.nisbets.co.uk/cambro-square-polycarbonate-food-s...
We did a test and letting it sit in the fridge covered for 3-4 days definitely improved it over the suggested same-day use in the recipe. A longer, slower rise seems to be the trend if you can find the time, and the fridge ensures a consistent temperature. It also made it easier to work with, the recipe was quite wet (I've heard wetter is better for pizza dough but it was super sticky).
https://www.seriouseats.com/recipes/2011/10/nancy-silvertons...
Basically what I’m saying is don’t buy a fancy proofing set up, maybe use the oven with the light bulb on, but probably just make sure you leave good time / wake up earlier ;-).
Structuring is basically a series of stretches and folds that shape the bread and arrange the stretches of gluten. You need gluten strength to be able to do that. Bread without structure won't puff up properly and will be dense. Bread that is over proofed, loses it's structure (it collapses) because when the yeast runs out of food and starts breaking down your gluten.
Indeed the temperature, water content, yeast strength & amount all factor into what will happen. So, adjust timings in recipes accordingly and use the fridge to your advantage to slow things down. A slow cold proof builds more taste than a quick warm one.
The first book flour water salt yeast was the first book I got, and they really help you learn how to bake yeast breads.