There are two ways to SOFT boil an egg.
1. Place eggs in pot. Cover 1 inch over the eggs. Boil water then turn off.
Remove eggs, cover pot for 5-6 mins (5 runny-6 thicker)
Run under cold water immediately then peel.
2. Fill a pot with water and bring to boil. GENTLY place eggs in boiling water. Turn to low for 5/6 mins. Remove immediately and run under cold water then peel.