Slow-Baked Treviso-Style Radicchio

Here's a simple bitter vegetable to serve alongside the sweet wine-cooked leg of lamb on .

Avoid any radicchio that is turning green, a sure sign of oxidation. Store treviso wrapped in paper towels in the refrigerator until ready to cook. Like most winter vegetables, freshly harvested treviso will keep well in the crisper for up to two weeks.

Nibble on a leaf—if it seems too bitter, try soaking the heads in fresh cold water for 10 minutes.