Start up the kitchen level, an head straight to the stove an turn it on. Cook your self to 142% on one side (should be 50% edible if you got 100% edible by the time you got to the stove) flip your self an cook to 142% done again. DO NOT FINISH THE LEVEL WHEN IT HITS 1%. Finishing the level at 1% will not get you the achievement. You must finish the level as soon it hits 0% on the burner an then the achievement should unlock by then