An absolute must with a million and a half uses. But do not buy just any plastic wrap. Go to a restaurant supply store and buy a large roll of restaurant plastic wrap. It sticks much better than the common grocery store plastic wrap and is much cheaper per foot.

This is another area where spending money is justified. The best pans combine different metals like aluminum or copper on the outside and stainless steel on the inside. Aluminum and copper are valued for their ability to spread heat evenly over the entire pan, and stainless steel is valued for its non-reactive qualities. Buy pans which are heavy and thick with solid handles that are well fastened to the pot. As with knives, buy the highest quality cooking pans you can afford one at a time, starting with a saute pan and a 3 qt. sauce pan. They will last forever. At some point, a stock pot (which will be especially pricey) should be considered for serious cooking.

When cooking potatoes to use in potato salad, add a little vinegar to the water when boiling the potatoes. The vinegar causes the potatoes to form a thin crust, which helps them hold their shape