How to Hard-Cook Eggs
Place eggs in single layer in saucepan. Add enough water to saucepan to completely cover eggs by at least 1 inch. Bring water to boil; cover. Remove saucepan from heat. Let stand 20 min., then immediately add eggs to bowl of ice water. Let stand until eggs are completely cooled, changing water as necessary. Perfectly hard-cooked eggs will have a firm yellow center with no greenish tinge. Hard-cooked eggs in their shells can be refrigerated for up to 1 week.