source: Oregano is a necessary ingredient in Greek cuisine.
target: Oregano is a necessary part of in Greek way of cooking.
references: Oregano is a necessary part of in Greek way of cooking. Oregano is a basic ingredient in Greek food. Oregano is an important part of Greek cooking. Oregano is an essential ingredient in Greek cuisine. Oregano is a not replaceable part in Greek cuisine. Oregano is an ingredient in Greek Cuisine. Oregano is a well know additive in Greek cooking.