Why are there more carbs in frozen blackberries than in fresh?

Frozen blackberries may contain slightly more carbohydrates than fresh ones due to the freezing process, which can concentrate the sugars. Additionally, some brands may add sugar or other sweeteners during the freezing process to enhance flavor, increasing the carb content. However, it's essential to check the nutrition labels, as the differences can vary based on processing methods. Overall, the basic nutrient composition remains similar, with both forms being healthy options.