The title gives you a clue about the size of his kitchen. A 3x3 grid. Yes, a very small kitchen. The location of each part of the kitchen can be numbered like:
1 2 3 4 5 6 7 8 9
There are 9 distinct sounds which correspond to the 9 locations in the kitchen. You can also hear his "screeching" as he turns in place (90 degree left turns each time), and you can hear his footsteps as he walks through the kitchen. The "oh yea" and "oh no" break up the different attempts he makes at making the food.
There are 3 attempts. Each attempt, if you trace out the steps he took, forms a letter:
which spells what the boss was making: HAM.