Ouzo is the Greek cousin to Pernod, being an anise-flavored liquor that's made from grape must. It's traditionally distilled and then flavored with ingredients including anise seeds, mint, clove, and other herbs.
Sambuca. Since sambuca is related to Ouzo and Pastis, you can use it as a Pernod substitute in cooking, particularly if you want a similar taste. White sambuca is the most common variety, which is usually colorless.