This jam has 151 kcal and 29.4 g sugar per 100 g. Typically half sugar by weight. A tablespoon (~20 g) is ~50 kcal. The fruit content provides minimal fiber compared to fresh fruit. Spread it thin and weigh once.
How should I track Jams, preserves, marmalade, reduced sugar?
The trickiest part about tracking Jams, preserves, marmalade, reduced sugar is that small portions pack a lot of calories, and most people estimate sweet portions poorly. Research (Almiron-Roig et al., Appetite 2013) found that calorie-dense foods are underestimated by 50–200% when portioned by eye. Weighing on a scale takes the guesswork out. And here is the mindset shift that helps: tracking sweets is not about guilt. It is about awareness. When you log a treat honestly, you can plan around it and still hit your targets for the day.