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# food

Food correlation types combine any number of nutritional samples into a single food object.

```
static let food: HKCorrelationTypeIdentifier
```

## Discussion

When creating food samples, specify the type of food using the [`HKMetadataKeyFoodType`](/documentation/HealthKit/HKMetadataKeyFoodType) metadata key.

## See Also

[`HKCorrelationTypeIdentifier`](/documentation/HealthKit/HKCorrelationTypeIdentifier)

The identifiers that create correlation type objects.

[`HKCorrelationType`](/documentation/HealthKit/HKCorrelationType)

A type that identifies samples that group multiple subsamples.

[`HKCorrelation`](/documentation/HealthKit/HKCorrelation)

A sample that groups multiple related samples into a single entry.


---

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