Onions come in two forms from Full Belly: Fresh or Spring Onions (with green tops on) and Dried onions (without the tops- a more 'standard' onion look). They can be used similarly but the fresh ones will be a bit more moist. Onions contain allicin, a phyto-chemical compound that reduces blood pressure and reduces risk for cancer and diabetes.  Fresh Onions should be stored in the refrigerator for up to a week. The whole onion can be used - tops and all! Dried Onions can be stored in a cool, dark place for up to two weeks.