What you shuold play to avoid the fried liver

The fried liver [which is the position below] is a very dangerous against black if allowed played against him/her because it forks blacks queen and rook plus gives white a tempo because black has to move his queen out of danger.

What you should play to avoid this is e4,e5,nf3,kc6,be7 so white can't move his knight to the fried liver position.