Tamarillos should be fresh with no green skin and flesh firm but slightly soft to a gentle touch. Tamarillos will last 2 weeks if stored in the refrigerator they will last up to 2 weeks; 1 week for those stored at room temperature. When using tamarillos wash first. If you want to eat the flesh easily scoop it out and eat with a spoon. For other uses the tamarillo should be peeled. To peel it cut a cross in the base. Blanch it to remove the skin quickly.