Gluten-Free Brioche Croissants

Look at the flour line-up: two different gluten-free blends plus potato starch, not just one bag of "gluten-free flour." That's deliberate. Commercial GF blends vary wildly — some lean on rice flour, some on maize, some already contain xanthan gum for structure. Using a strong, fine blend like Caputo's alongside a second, different blend spreads the risk: if one blend is heavy or gritty on its own, the other balances texture. The potato starch isn't filler — starch granules absorb liquid and swell on heating, giving softness and a slight chew that pure flour blends alone often can't manage. If you've only got one GF blend in the cupboard, use it for the whole 300 g, but expect a slightly denser result and compensate with a touch more liquid if the dough feels tight.

The yeast and its two liquids — milk and water — do a specific job beyond just "wetting the flour." Warming the milk gently wakes the yeast faster (yeast is sluggish in cold liquid, dead above roughly 50°C, so "slightly warm, not hot" is the real instruction hiding behind "warm the milk"). Dissolving the yeast in water first, separately, lets you see it's actually alive — bubbling, a faint beery smell — before you commit the whole batch to it. Skip that check and a dead sachet of yeast only reveals itself two hours later, when the dough hasn't moved.

The egg is doing the work that gluten normally does: binding, structure, a bit of lift from the proteins setting as they heat. One egg in this volume of flour is not a lot — don't be tempted to add a second "for richness," since GF doughs that are already short on structural gluten can turn gummy with excess egg and fat fighting for space.

Butter should be soft or melted, as the recipe says, because cold butter in a gluten-free dough won't incorporate evenly — there's no gluten web to drag solid fat through, so it just sits in lumps and leaves greasy pockets. Any flavourless, solid-at-room-temperature fat works as a substitute — a neutral dairy-free spread, for instance — but avoid liquid oils here; they won't give the same short, tender crumb.

Sugar at 100 g is more than seasoning — it feeds the yeast and, since GF breads stale faster than wheat ones (no gluten to retain moisture), the sugar also helps keep the croissants soft a day later. The vanilla pod is pure flavour, no mechanism to defend — use the seeds scraped out, or a good vanilla extract if a whole pod feels extravagant for a Tuesday bake.

Filling choice — chocolate hazelnut spread or jam — matters structurally too: thick spreads stay put during the second rise and bake; thin, runny jam will seep out through any gap in your pinched seal and scorch on the tray. If you're using jam, a stiffer one (and a smaller spoonful) behaves far better than a loose one.

The milk-or-egg-yolk brush at the end isn't decoration, it's colour chemistry — proteins and sugars browning in the oven's heat. Milk gives a gentler, paler gold; egg yolk gives a deeper, shinier brown. Use whichever you have — in a British kitchen with milk for tea always to hand, that's the easier default, and the result is still a good croissant, just a shade paler.

On a Sunday roast schedule, this fits nicely in the gaps: start the dough mid-morning while the oven's still cold, let it rise through the washing-up and the Yorkshire pudding batter resting, shape while something else is in the oven, and bake these alongside or just after the roast comes out — 170°C is gentle enough not to fight for oven space with much else, and twenty minutes is long enough to watch, not just time by the clock: pull them when they're golden and firm to a light press, not pale and still soft in the middle.