Milan's signature hollow bread roll, shaped like a five-petaled rose, entirely void of crumb — the result of Milanese bakers deliberately hollowing out the Austrian kaisersemmel to keep the crust crisp in the city's humid air. A long biga ferment, high-gluten flour, and a steam-injected 250 °C bake combine to produce its trademark puffed, glassy shell.
Following the 1713 Treaty of Utrecht, Lombardy passed to Habsburg Austria and Austrian officials arriving in Milan brought the kaisersemmel, a compact Viennese roll. Milan's humid climate turned the imported bread gummy by evening, so local prestinai (bakers) hollowed out the crumb entirely, creating a moisture-resistant roll they called michetta — a diminutive of micca, from Latin mica (crumb), the very element now absent. Post-World War II, American-introduced Manitoba high-protein flour gave bakers the gluten strength needed for a reliably hollow structure. In 2007, the City of Milan granted michetta Denominazione Comunale (De.Co.) status.
Bite through the crackling shell and find nothing — pure hollow air — then the thin crust shatters into feather-light shards with no chew, no gumminess, only crackle and a faint yeasty-malt sweetness that dissolves in an instant.
A biga pre-ferment (18-20 hours at 12 °C) develops complex organic acids and an extensible gluten network. Shaped rolls bake at 250 °C with heavy steam injection: steam gelatinizes the outer starch layer instantly, forming a smooth, expandable skin that maximises oven spring. Interior moisture flashes to steam, CO₂ from fermentation expands the cavity, and the soft crumb structure — weakened by the stamped mold — collapses inward. Steam is then vented; dry heat drives Maillard browning across the shell, generating pyrazines and furans that lock into a glassy, crackling crust resistant to ambient humidity.
Variations
Some bakeries add a small amount of lard (strutto) to the final dough for extra shatter and shelf life. A softer mezza michetta retains more interior crumb. Contemporary Milanese artisan bakers have revived stone-ground flours and natural sourdough leavening in place of commercial yeast.
On the Palate
Where Michetta sits in the Italian flavor cloud
Ingredients
Serves 12How it's made
7 steps · 20 min
- 11140 min
Prepare biga: mix bread flour (100 parts by weight), water (45 parts), malt powder (0.1 part), and yeast (1 part) into a shaggy dough; cover and ferment at 12 °C for 18-20 hours until doubled and fragrant.
- 220 min
Incorporate remaining bread flour (20% of the biga flour quantity), water to adjust consistency, salt, and a small amount of lard into the fermented biga; knead at least 15-20 minutes until the dough is smooth, supple, and highly elastic.
- 375 min
Let the dough bulk-ferment at room temperature for 60-90 minutes until noticeably puffy but not fully doubled.
- 410 min
Divide into 50-60 g pieces; roll each into a tight ball, then stamp firmly with a five-petal michetta press — the mold perforates and compresses the dough, creating the star pattern and weakening the interior crumb structure so the cavity can form during baking.
Watch outStamp the ball firmly enough to crush the center thin — that weakened core is what hollows out into the michetta's signature cavity in the oven.
- 535 min
Place rolls on parchment-lined trays; proof 30-40 minutes at room temperature until slightly risen but still compact.
- 625 min
Bake at 250 °C with heavy steam injection for the first 12 minutes; open the oven door briefly to vent steam and reduce to 220 °C; bake a further 12-13 minutes until the shell is deep golden and rolls sound hollow when tapped.
Watch outGive it heavy steam for the first 12 minutes, then vent — steam keeps the skin soft so it springs and hollows; without it the shell sets too early and won't cavity.
- 710 min
Transfer to a wire rack; the crust crisps further as the rolls cool — serve within 2-3 hours for maximum crackle.
Watch outTap the base — a hollow knock and a deep-gold crackly shell means it's baked through; serve within a couple hours before the crust softens.
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