What's the difference between crème de marrons and chestnut purée, and are they interchangeable in recipes?
These are different products, the crème de marrons is puréed candied chestnut that has a high syrup content and chestnut purée is cooked and puréed chestnuts with no sweeteners added. The syrup in the crème de marrons will prevent it from freezing rock solid and so is very useful in recipes such as my frozen desserts and puddings where a smoother texture is required.