Baking gluten-free bread with a reliable crumb

Why gluten-free bread so often disappoints

Gluten-free bread has a reputation problem, and it is usually earned. Without gluten, there is no elastic network to trap gas and stretch around a rising loaf. A single gluten-free flour, or a bag of plain starch, gives you a brick, a sponge, or a crumbly mess that falls apart on the knife. The fix is not one magic ingredient but a system: a blend of flours for flavour and structure, a starch for lightness, psyllium for elasticity, and yoghurt for moisture and acidity. Get that balance right and you can bake a gluten-free loaf with a reliable crumb that slices cleanly and tastes like something you want to eat.

Build a flour blend with heritage grains

Start with 500g of flour blend. A good everyday ratio is 350g wholegrain gluten-free flours to 150g starch. For the wholegrain part, heritage grains are your friends: sorghum for a neutral, wheat-like base, teff for a malty, slightly earthy note, and millet for sweetness and a tender crumb. You could also use buckwheat, amaranth or quinoa. These are ancient grains, not modern commodity crops, and they bring minerals, fibre and flavour that plain white starch cannot.

For the starch, use tapioca starch for chew and potato starch for softness. A blend of 150g sorghum, 100g teff, 100g millet, 100g tapioca starch and 50g potato starch works beautifully. If you are baking for coeliac disease or gluten sensitivity, remember that British heritage wheats such as spelt, einkorn and emmer are not safe. The heritage grains for this loaf are the naturally gluten-free ones.

Psyllium and yoghurt: the crumb builders

Psyllium husk is the ingredient that turns a batter into a sliceable loaf. Use whole psyllium husk, not powder, and weigh it. For 500g of flour blend, use 20–25g. Soak it in the liquid before mixing: 350g water, 200g full-fat Greek-style yoghurt, 15g honey or maple syrup, and 30g neutral oil. The yoghurt does two jobs. Its acidity helps the psyllium gel develop, and its fat and protein keep the crumb moist and tender. Fat-free yoghurt will give you a drier loaf, so use the good stuff.

Whisk the psyllium into the water and yoghurt, then leave it for 10 minutes. It will thicken into a slippery gel. In a separate bowl, whisk the flour blend with 7g instant yeast and 10g fine salt. Pour the wet into the dry, add the oil and honey, and beat with a wooden spoon for 2–3 minutes. The dough will be soft, sticky and more like a thick cake batter than a kneadable bread dough. That is exactly right. Do not add extra flour to make it firmer; you will lose the crumb.

Mixing, proving and baking for a sliceable loaf

Grease a 2lb loaf tin and line the base with baking paper. Scrape the dough in with a spatula, then smooth the top with a wet hand or a wet spoon. Cover and prove in a warm place for 45–60 minutes. You are looking for a rise of about 50 per cent, with a few small cracks on the surface. Gluten-free dough does not need to double, and over-proving gives a dense, collapsing loaf.

Preheat the oven to 220°C conventional / 200°C fan. Bake the loaf for 20 minutes, then reduce to 200°C conventional / 180°C fan and bake for another 30–35 minutes. If the top browns too quickly, tent it with foil. The loaf is done when it sounds hollow and the internal temperature reads 96–99°C. Cool it in the tin for 10 minutes, then turn it out onto a wire rack. Do not slice it warm. The crumb is still setting as it cools, and cutting early gives you gummy slices. Wait until it is completely cold.

Troubleshooting a dry or crumbly loaf

If your loaf is dry, the usual causes are too much starch, too little yoghurt, or overbaking. Try adding 20g more yoghurt or 20g more water next time, and check your oven temperature with a thermometer. If the crumb is crumbly, your psyllium may be old or under-hydrated. Buy fresh husk and give it the full 10 minutes to gel. If the loaf is gummy, it is almost certainly underbaked or cut too soon. If it is dense, you may have over-proved it, or used too high a proportion of wholegrain flour.

• Flat loaf: old yeast, over-proving, or a tin that is too wide. Use a 2lb tin.
• Cracked top: normal for gluten-free bread, especially with a high rise. It is not a fault.
• Soggy bottom: cool it on a rack, not on a plate, and do not wrap it while warm.
• Dry edges: brush the crust with a little melted butter or oil as soon as it comes out of the tin.

Variations and heritage grain swaps

Once you have a reliable crumb, you can play. Swap the teff for buckwheat for a deeper, earthier flavour. Swap millet for amaranth for a nuttier note. Add 50g of soaked sunflower, pumpkin or linseed for a seeded loaf, plus an extra 30g water. A tablespoon of black treacle gives a dark, malty loaf. For a softer, tangier crumb, replace 50g of the water with kefir or buttermilk. Keep the total liquid the same.

Heritage grains vary in how much water they drink, so hold back 30g of the water on your first bake. Add it if the dough looks stiff after mixing. You want a thick, spoonable batter that holds a soft shape in the tin. Store the cooled loaf wrapped in paper or beeswax wrap at room temperature for two days, or slice and freeze it. Toasted from frozen, it is every bit as good as a fresh bake. With psyllium, yoghurt and a thoughtful blend of gluten-free heritage grains, a dependable loaf is not a compromise. It is simply good bread.