Please choose the correct ending to complete the given sentence: Food and Entertaining: [header] How to serve foie gras [title] Choose the right kind of foie gras. [step] Make sure that the foie gras you buy is pre-cooked and ready-to-serve. Only purchase raw foie gras if you have a recipe that calls for it.

Ending1: [substeps] There are two basic types of foie gras: duck and goose. Duck is richer and more rustic, while goose is creamier and more delicate. Ending2: Otherwise, the wait time and/or cost can make it hard to make a proper mold of the foie gras. [substeps] Even cooks who cook, then baked, may have skipped the pre-cook process. Ending3: If you don't, the raw foie gras may be spoiled or smell like you like. [substeps] Raw foie gras should be served cold instead of hot. Ending4: [substeps] Pre-cooked foie gras should usually be served 3-4 days prior to serving. Raw foie gras is served 7 days prior to serving.

Answer format: ending1/ending2/ending3/ending4