How do technically defined 'preserves' differ from 'jam' regarding fruit structure?

Answer

Fruit pieces remain mostly whole or substantially large

The technical definition distinguishing preserves hinges on maintaining the physical integrity of the fruit. In preserves, the fruit pieces are cooked in sugar syrup but remain largely whole or in substantially large segments, allowing them to retain their original form. This contrasts directly with jam, where the fruit is intentionally crushed or pureed, resulting in a less structured mixture.

How do technically defined 'preserves' differ from 'jam' regarding fruit structure?
foodtermfruitpreservejam