I always know something about cook, there always is cook mistakes.

1. Use A real knife. You can do a lot with a good chef’s knife, and you can’t do shit without one. It doesn’t have to be an expensive model; America’s Test Kitchen has recommended this Victorinox 6 chef’s knife for years, although I have grown accustomed to the handles on my Henckels Four-Star knives. Buy a good chef’s knife that feels comfortable in your hand, with a blade 8 to 9 inches long, and buy a honing steel to keep it sharp. Avoid home sharpeners, though, which “sharpen” your blade by destroying it.
 

2.Salt is important. The food police have everyone running scared of good old sodium chloride, but it’s incredibly important from a culinary perspective as a flavor in and of itself and as a flavor enhancer. Salt intensifies other flavors in every dish by hitting the fifth taste known as umami; without salt, most foods will taste bland, flat, or even stale. Salting foods early in the process allows you to use less salt in total because you can often infuse your foods with salt by dissolving salt in the cooking liquid. Pasta water should always be heavily salted, and the cooking liquids for small grains like rice, barley, or quinoa should also have salt. Seasoning the exterior of meats helps prepare the surface for the Maillard reaction that occurs during the application of direct heat on a grill or on a stovetop pan, producing that brown crust that, for me, is the #1 argument against vegetarianism. I prefer kosher salt for most applications because it doesn’t dissolve too quickly and is easily pinched due to the coarse grain size, but I use table salt for baking because kosher salt will not integrate evenly in most doughs and batters.

Someone asked in chat what I would recommend for someone with high blood pressure who has to limit his salt intake. The best answer is an unfortunate one, but the reason that monosodium glutamate originally became popular is that it’s a tremendous flavor enhancer that delivers that same umami hit that salt does, perhaps even more powerfully. MSG has a nasty reputation and can trigger a fatal reaction in a person allergic to it (a close friend of our maid of honor’s sister died of anaphylaxis after eating MSG), so it’s not for everyone, and I personally don’t use it because I don’t need to, but it will do the job. Failing that, there are some potassium-salt products that can be used in moderation as salt replacements, and using acids like lemon juice, vinegar, onions, and citrus fruits can also help fill the no-salt gap.

EDIT: A few commenters have said that salt and umami hit different receptors on the tongue. I remember reading in a technology magazine - might have been Red Herring seven or eight years ago about umami, where the writer identified salt as the primary flavor enhancer and thus primary umami delivery mechanism in our diets.

 

3. Cooking by temperature. Most recipes say”ake for 20 minutes” or “grill for 15 minutes,” but those directions assume a median size and shape for the food being cooked and a degree of consistency in ovens and grills that simply doesn’t exist. The food you’re cooking is dead - even lobster dies when it hits the boiling water if you haven’t already killed it - and doesn’t know when the timer goes off. Your roasted chicken breast is done at 161 degrees, whenever it gets there, and you’re not going to know when it gets there unless you check it with a thermometer. I keep two in the house: A cheap instant-read thermometer (also useful for checking the temperature of water for green tea, which is best brewed at 160 degrees) and a probe thermometer with an electronic alarm. I wouldn’t roast a turkey or a pork loin without one of the latter.

 

4. Fry - or, as Alton Brown’s plastic chicken once said, “fry some more.” Everyone’s afraid of frying just as they’re afraid of salt, but if you fry right, the fried food will absorb very little of the cooking oil and will amaze you with its texture and moisture. When you keep the oil hot and remove the food before it’s overcooked, the food’s exterior (usually a batter or breading) won’t absorb the fat in which it’s being cooked. The keys to frying are simple:

* Use a huge pot of oil or fill your electric fryer. The more oil you use, the faster the oil temperature will rebound after you add your cold food, which can easily knock a small pot of oil down fifty degrees.

* Use a frying or candy thermometer and monitor it. Too low and you’ll get greasy, undercooked food. Too hot and you’ll get smoke and eventually fire.

* Keep an eye on the food. If it stops sizzling or emitting steam, it’s probably starting to overcook. The force of the food’s internal moisture escaping as steam prevents oil from seeping in, but when the steam stops escaping, the food is dry and will start to suck up oil from the pot.

 

5. Using fresher spices. If you’ve got a cheap $8 coffee grinder with a rotating blade, I have two things to say to you: It’s useless for grinding coffee, and it’s great for grinding whole spices. Buying spices whole and grinding them yourself is cheaper two ways and maybe three. One, the whole spices tend to be cheaper per unit of weight. Two, they’ll last far longer than ground spices, which go stale in six months to a year;a whole nutmeg will last for several years, while ground nutmeg is sawdust in a few months. And three, if you’re buying your ground spices at a regular grocery store, there’s a chance you’re getting fillers in addition to your chile powder or allspice. Buy your spices whole, toast some before grinding (cumin, coriander, and fennel seeds in particular), and grind them as you need them. I recommend Penzey’s for mail-order spices, although I may be biased because I have one near my house. I’ve been very happy with their quality and prices on almost everything they sell. A corollary to this rule is to use fresh herbs when you can, especially in season. A $2.19 package of thyme from my local farmstand will keep for two weeks if left in its plastic box in my vegetable crisper drawer, and the volatile oils in fresh herbs give them a deeper, richer flavor than dried herbs can provide. This also means that those spice mixes you buy in stores are a particularly bad deal - they often contain fillers, they nearly always contain salt as the first ingredient, and they take the control out of your hands. Make your own spice mixes in small batches as you need them.

We should know the cooking mistake,so you can correct it.