Freshly Milled at Home Not Necessarily Better; Whole-Grain Versus Refined Matters

A technical post reframes the home milling debate: the important distinction is whole-grain versus refined flour, not simply home-milled versus commercially milled. That matters because nutritional retention and how a dough performs in the oven come down to whether you are keeping the bran and germ, and how you handle them, rather than where the flour was ground.

The technical post concludes "the real distinction is whole‑grain versus refined flour, not ‘home‑milled’ vs ‘mill‑milled.’" It also states "Key points: (1) nutrient loss after milling happens over weeks/m." Those lines push the conversation away from romanticizing the hammer-and-sickle image of home milling and toward practical decisions about storage, use window, and whether to include bran in your formula.

On the workbench, experienced home bakers are already adapting techniques to make home-milled whole grain workable. One baker on TheFreshLoaf reported, "My experience with fresh milled (also using mockmill) is that the grind is often a little courser than I think it is." Their workflow is hands-on: "What has worked for me is a pass through the grinder, followed by a sift to get as much large bran out as possible, followed by another pass through the grinder." That approach aims to tame brash bran particles while preserving the nutrition of whole grain.

Practical measures matter in dough handling as much as the mill. The same baker described a soaking routine: "I then, like you, add all of the water (with no levain or yeast) to the milled flour and let it soak for \at least\ 6 hours (+ occasional folding/stiring), to soften any ragged particles that could cut the gluten and encourage starch breakdown via enzymes." They also warn that home-milled flours can be "a bit more 'thirsty'," often needing "an extra 10-15 gm more liquid." Where you live affects that: the poster linked hydration needs to grain moisture and an "arid climate (Arizona)."

Bran handling is the core functional challenge. The forum poster recommended sifting bran out and soaking it separately, possibly with active malt powder, or feeding bran to levain the night before. They cautioned, "It is \really\ difficult to home-mill bran fine enough it just gets flattened out with sharp edges that will act like little razors that cut all of your gluten and greatly reduce its extensibility in proofing/oven spring." That describes a tactile problem bakers see when whole-grain loaves refuse to spring.

What this means for your sourdough: keep whole-grain decisions deliberate. If your goal is nutrition and flavor, home milling delivers, but expect to adjust hydration, consider sifting or presoaking bran, and use extended autolyse-style soaks to let enzymes and levain do the heavy lifting. If convenience and consistent behavior are priorities, blending fresh-milled with commercial flours (the poster reported mixes from 20%-80% home milled with King Arthur AP or Bread flour) can be a steady compromise.

Next steps at the community level are practical: test a grind → sift → regrind workflow on your mill, track water adjustments in grams, and time a \at least\ 6-hour soak to compare crumb and oven spring. The debate shifts from ideology to technique, so mill, measure, and bake to find what your starter and climate will forgive.