Treviso, Veneto
Radicchio Tardivo di Treviso IGP — the 'black diamond of Treviso' — is the most prized chicory in the world: long, narrow heads with white ribs and dark burgundy leaves, harvested in the frost and blanched (covered to exclude light) for 15 days in running spring water to reduce bitterness and develop sweetness. Halved or left whole, grilled over charcoal until the leaves char and crisp while the rib remains firm, then dressed with aged Balsamico Tradizionale di Modena and a thread of olive oil. The bitterness-sweetness contrast after grilling is one of the great flavour experiences in Italian cuisine.
Bitter-sweet, charred-edged, firm-ribbed Tardivo dressed with the concentrated sweetness of aged Balsamico — a vegetable preparation of extraordinary sophistication achievable only in winter
{"Tardivo only (not the round Chioggia radicchio) — the elongated forced-blanched heads have a unique structure","Halve lengthwise, brush cut face with olive oil, grill cut-face down over direct charcoal heat 4–5 min","The outer leaves should char and become almost crispy; the rib should remain firm","Dress immediately off the grill while still hot — the warm oil and vinegar penetrates","Aged Balsamico Tradizionale 12 years minimum — regular balsamic vinegar produces a completely different result"}
{"A few toasted walnuts and a shaving of aged Monte Veronese alongside make a composed starter","The blanched Tardivo's bitterness level can be assessed by tasting a raw leaf — it should be pleasantly bitter, not harsh","Tardivo is seasonal (December–February only) — no equivalent out of season"}
{"Chioggia round radicchio instead of Tardivo — different structure, more bitterness, loses shape on the grill","Young Balsamico — it needs the concentrated sweetness and complexity of aged Tradizionale","Grilling cut-face up — the rib doesn't char and the shape doesn't develop"}
La Cucina Veneta — Gualtiero Marchesi (ed.)