Overview

Guava is a very nutritional fruit. The dry leaves are also very beneficial as they contain antioxidants, they are antibacterial and have anti-inflammatory benefits. When steamed, it can be treated for stomach issues and even cancer. 

Guava leaves have very high levels of anti-oxidants and those destroy free radicals that damage skin. A mixture of boiled guava leaves and yogurt applied to the skin improves skin complexion. The tea also brings quick relief from diarrhea, lowers cholesterol, encourages weight loss and assist with diabetic issues. Furthermore, studies have shown that a regular use of guava leaf tea flights cancer.

The most important point is that dried herbs and spices can never go bad if they are kept dry. Yes, the potency is lost, but it will still influence the flavor of your cooking.
Seeds, roots, leaves and flowers last longer than crushed or ground herbs and spices. When you are preparing to store your dry herbs and spices it is vital that they are completely dry. A good indication is to rub it with your finger to check if it crumbles. As oxygen degrades dried herbs and spices over time, you should store them in airtight containers. Glass jars with sealable lids are perfect, and so are metal tins. Plastic won’t do for long terms storage. Sunlight also degrades dried herbs and spices; therefore, it should be stored in a dark cabinet that is both cool and dry. If your spice rack is near the stove or cooker, steam will degrade your herbs and spices each time you open the container while cooking. When buying in bulk, you should always store only some of the dried herbs and spices in a glass or metal container. Each time you open it, it is exposed to the elements. When buying in bulk it is useful to label your containers with the purchase date and discard date.