Usually, edamame beans are syn-free. However, packaged edamame beans from the market can contain up to 1 syn within a range of 20 calories. So, for a 100-calorie serving of edamame beans, you can expect to have five syns. However, the amount of syn is minimal enough to consider. If you harvest edamame beans by yourself, you can expect to have no syn. It’s all about the processing of the food item.  If manufacturers include syn when packaging, you’ll find the amount of syn in the given nutritional values on the packet.