Dried nori seaweed has 35 kcal per 100 g. Pre-toasted sheets for sushi and snacking. A single sheet (3 g) has about 1 kcal — essentially free.
How should I track Nori seaweed, dried?
Nori seaweed, dried is high in fiber. For consistent tracking of Nori seaweed, dried, weigh it raw. Cooking method changes both weight and calorie density — steaming barely changes anything, but roasting with oil or frying can double the calories. A systematic review (Whitton et al., Adv Nutr 2022) found vegetables are omitted from food logs 2–85% of the time, often because people assume they are "free" calorically. While most vegetables are indeed low-calorie, the fats added during cooking are not. Log the oil, butter, or dressing separately to keep your tracking accurate.