There are countless ways to reduce the risk of child-related injuries in the kitchen, but the surest method to keep curious youngsters out of harm's way is to simply prevent them from entering the room in the first place. Baby-barring gates are available in a variety of sizes and price ranges, so you never have to worry about your little wanders embarking upon unsupervised exploratory kitchen expeditions. You can get standard safety gates that you have to step over when entering or exiting the room, or you can get one that acts as a miniature, adults-only doorway that you can open, but your baby or toddler can't get past.
If you'd rather not be constantly stepping over or opening a baby gate, another option is placing your tot inside a portable, gated play area within sight of the kitchen. This way, you can keep an eye on your little one while you cook. You'll be able to move around freely, and the fact that you're still visible will hopefully prevent him or her from shedding any tears.