Source: Schema.org v30.1 vocabulary. Official servingSize property definition.
What does servingSize mean?
The serving size, in terms of the number of volume or mass.
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status