A good chef's knife is one of the most important kitchen tools to own. Vivian Chan, host of Viv's Tips, swears by a Shun Nakiri Knife for making the most precise cuts during every episode of Viv's Tips and at home. This knife has a straight edge, which means that you don't need to use a rocking back-and-forth motion to make the most of it. Use it to slice through fruits, vegetables and even butcher meat. It may be on the pricier side, but it's a kitchen tool that will last you a lifetime.