
After digging, sweet potatoes need to be cured for several days. This process increases the shelf-life and flavor of the sweet potatoes. Curing should be done in a warm, humid location. Ideally the temperature should be between 85- and 90-degrees F with a relative humidity between 85 and 95%.
Store sweet potatoes for several weeks before consuming. During this time starches are converting to sugars which improves the flavor. Protect sweet potatoes during storage by keeping temperatures above 55 degrees F. (Cynthia Domenghini)