In Thai cooking, for curries I notice two different methods. One is where the coconut cream is put to boil and then the curry paste is added and rest of the ingredients are added. The other way is oil is heated up and then the paste is added and cooked and then the rest of the ingredients follow. Is there a right way,does the dish come out different.
Thai curry cooking
currythai-cuisine
Related Solutions
Even though it isn't really milk (in the dairy sense), coconut milk still naturally separates into a thick cream and thinner liquid like regular milk. As such, when working with coconut milk you should still follow the same procedures you would to make a milk-based cream sauce.
The number one rule when making any creamy sauce is: DON'T LET IT BOIL! Boiling will guarantee that your creamy sauce (including sauces made with coconut milk) will break in some form or fashion. At most, you should cook these at a bare simmer.
Other than that, there are some techniques you can use to keep your curry smooth.
You could use an emulsifier like honey (common in vinaigrettes, where it is used to make sure the oil and vinegar don't separate), added toward the end of cooking.
You could also use a thickening agent, like a cornstarch slurry or a quick roux. Curry paste is also a thickening agent. As a general rule of thumb, when making Thai-style curry I usually cook my vegetables in a little more oil than I think they need, then add the curry paste and sauté that until it has absorbed the oil (along with any dry spices). It will act as a roux for the coconut milk and make sure there are no lumps in the final curry.
Lastly, cooking the curry uncovered at a simmer, stirring occasionally, will thicken it up nicely and help all the ingredients stay together.
I think what people often don't realize about many Thai curry pastes is what is not in them and this applies particularly to the main brands of imported Thai sauces like Mae Ploy for example. Let's take the Panang paste, this should have quite a pronounced peanut taste but if you check the label you will will search in vain for peanuts; fish sauce so essential to a Thai curry also missing. Why? The answer lies in the way these pastes are prepared on the production line. The ingredients are mixed and ground but then instead of being cooked in the conventional sense of the word they are instead pasteurized. This is a fast convenient process. The problem lies in the fact that there are certain ingredients that you can't use this process on, peanuts and fish sauce being among them. They use salt (a lot of it) to try to replace the saltiness of fish sauce but this lacks the aromatic factor that fish sauce provides. This can make it difficult for the cook to add fish sauce to the dish as it is already quite salty. Also although you may see shrimp paste on the label they are being a little disingenuous here; it is not Thai shrimp paste as we think of it but rather shrimp powder, I suppose if you mix it with some of the ingredients you can get away with calling it a shrimp paste. A poor imitation of the real thing though.
So onto the fact that your Panang curry doesn't taste like a Panang curry you eat in your local Thai restaurant. Well you might be surprised to learn they probably use the same paste as you do! What, you think they make their own pastes? Almost never. Yes there are exceptions, Pok Pok restaurants in the US being a good example with chef Andy Rikker describing the commercial pastes as "horrible" but for the most part many Thai restaurants will use them.
When you see a Thai person pushing their trolley around an Asian cash n' carry that is loaded up with industrial sized tubs of curry paste you can be reasonably sure they are not just stocking up their home pantry in case of a coming Armageddon. They then customize the sauce for use in the restaurant, in this case maybe ground peanuts or often peanut butter, a lot of sugar so they can then add Thai fish sauce without it tasting overwhelmingly salty. Maybe chop some coriander stems in to disguise the fact that only coriander seed is used in the commercial paste instead of coriander root.Depends on the restaurant, they all have their own methods. There are also some supermarket brand pastes that may well use peanuts as they use a method more akin to pressure canning, these are generally rather insipid concoctions though and best avoided.
So if you want to try making your curry taste more like one you had in a restaurant that is how you do it if you can't get the fresh ingredients to do it yourself. Also if you google "mythaicurry" you can buy pastes online that are cooked by more traditional methods and are far more authentic and will most likely surpass anything you have ever had in a Thai restaurant. They also have a good section on how to cook with coconut milk.
I'm a chef and worked in the development kitchens of some major food producers hence my knowledge of the techniques and limitations of commercial food production.
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Best Answer
The second method is FAR more preferable. When you add the curry paste to hot oil on the pan, it releases a lot more of the flavour & aromas, and also cooks out the raw-ness of many of the harsher ingredients such as onions, garlic and galangal (or ginger if you used that instead).
When you add these ingredients to boiling coconut cream, you are not releasing all the flavourss to the fullest extent because the heat that the ingredients are exposed to is significantly lower. I can imagine this being a lot more viable for pre-made curry paste (say in a can) versus curry paste from scratch. Curry made this way will be less flavoursome and aromatic.
It may also taste very strongly of onion and the coconut will be over powering. The coconut is meant to supplement the paste, which is the heart of the curry. By doing it this way, the paste is now supplementing the coconut.