The Greek sausage typically flavored with orange peel and fennel seed is loukaniko.
Loukaniko is a broad Greek sausage tradition usually made with pork or lamb. Recipes vary by region and producer, but orange peel and fennel seed are among its characteristic flavorings, often joined by dried herbs, spices or leeks. Some versions are smoked over aromatic wood.
It is commonly served as a meze, sliced and fried, and may appear with saganaki or in cooked dishes. Because loukaniko describes a family of sausages rather than one tightly standardized recipe, the exact balance of citrus, fennel, herbs and smoke can differ considerably across Greece.
The name has an older Mediterranean history. Loukaniko is related to the Latin and Italian term lucanica, associated with Lucania in southern Italy, and the Greek word has been used since at least the fourth century. That connection does not make the sausage Italian: Greek regional preparation and seasoning give loukaniko its distinct identity.