What is "oil-washed special coffee"? What is oil washing method? What should I do to wash wine and coffee with oil?

In the field of specially brewed coffee, baristas often use various strange techniques to improve the quality and flavor of coffee. For example, the "milk washing method" that can process milk to transparency is often shared by Qianjie., is one of the more common cases.

In addition to milk washing, there are many other similar methods that can bring a different taste to coffee. What Naqian Street wants to share today is one of the techniques that has the same advantages as the milk washing process-oil washing. If you are a friend who often surfs the Internet, you should have had some kind of "oil-washed coffee" recently. This kind of coffee, as everyone understands it from the name, is made by adding oil.

Qianjie has been involved long ago, and both the method and the final coffee are very unique! It just happens that many friends have been asking questions about the front street recently after surfing it. So without saying much, I will let Qianjie share what Youxi (wrong number)"oil-washed" is and how to make oil-washed coffee ~

What is oil washing? Oil washing, the full name is "oil washing method", is a practice in the catering field that uses freezing point differences to extract the flavor from oils and oils into the target. Like most skills, the pioneer in putting this skill into catering production is still the cocktail world. In 2007, a New York bar used an oil washing method to extract the aroma of oil into spirits. Since then, the oil washing method has been widely used in the cocktail industry. Most of the inspiration for special coffee comes from the cocktail industry, so the art of oil washing can collide with coffee. (The predecessor of the oil washing method was the "oil isolation method" that originated in the 18th century, and was first used to extract floral fragrance in the fragrance field)

There are basically no restrictions on the use of oil-washing materials. If there are two restrictions: "edible" and "non-toxic". There are a wide range of options in terms of oils, whether it is edible oils such as vegetable oils, animal oils, or nut pastes with oils; the same applies to the objects involved in oil washing, liquid coffee, spirits... Solid spices, flowers, fruits, peels and everything that can provide aroma can be extracted. There is only one goal, extracting the aroma/flavor into the target is that simple ~

The oil washing method is also very simple, and can be divided into three steps: ① Mix the materials evenly, ② put them in the refrigerator and refrigerate them for several hours, and ③ filter out the clear liquid. The principle is: because the freezing point of oil will be higher than other liquids and substances, when the temperature drops, the first thing to solidify will be the oil. So at this time, we extract other substances before they solidify, that is, filter them out, and we can get a clear liquid that does not have too much oil and has a strong aroma ~

When making oil-washed coffee, the ratio of oil to coffee needs to be adjusted according to the materials you use and the flavor concentration you want. This requires everyone to slowly explore according to your own preferences and goals. So next, is Qianjie going to share how to make oil-washed coffee? Not yet! There are many precautions before and after production that need to be understood first to avoid wasting our efforts through these wrong ideas during production.

Notes on oil-washed coffee Although the operating methods of oil-washed coffee are shared here on the front street, what everyone needs to know first is that the oil-washed objects of the "oil-washed coffee" we see in some coffee shops may not necessarily be coffee, or it may be oil-washed spirits and then mixed with coffee later. So everyone can open their minds a little and avoid being complacent. Then in actual operation, we also have many matters to pay attention to. The first one is that the coffee we use should not be too cold. The oil-washed coffee many friends brush on the Internet is what is called "coconut oil washed cold extract coffee". If we directly use cold extract coffee to make oil-washed coffee, there is a high probability that we will get a pot that looks unsightly. mixture...

Because the temperature of cold-extracted coffee is too low, the oil will directly condense into lumps due to cold. Although this can be extracted, the actual effect will be inferior. So, we can pay attention to the temperature of the coffee. (It is best to heat it first when making cold coffee, or heat it during making.) Secondly, not all oils will be liquid at the beginning, such as butter, and will remain solid as long as the ambient temperature is not too high.

When we use this type of oil to make oil-washed coffee, it is best to heat and melt it into a liquid state in advance before making it. Or as Qianjie mentioned earlier, it can be heated and melted during the production process. Only in this way can we better extract the aroma substances in these oils.

How to wash coffee with oil? So next, Qianjie will share the specific operation of oil washing! The coffee beans used in this production of Front Street are the deep-roasted coffee beans in the bean list, Front Street Sumatra·PWN Gold Mantonin. Then he chose butter for the grease, because Qianjie wanted to make a cup of deep-roasted coffee with a milky flavor.

And because this cup of oil-washed coffee wants a balanced aroma, the ratio of butter to coffee is 1:6. This ratio will not make the aroma brought by butter too strong to overshadow the taste of coffee. The extraction parameters of coffee are as follows: powder amount 15g, powder and water ratio 1:15, grinding degree of fine granulated sugar particles, 75% sieving rate of No. 20 sieve, water temperature of 89°C, and brewing time of 2 minutes. As shown in the picture, if you use hot coffee making, you can directly put the butter in the sharing pot so that it can melt in contact with the hot coffee during the coffee brewing process. Skip the brewing process!

When we are done brewing, the next thing to do is to mix the coffee with the fat well. Friends who have an electric blender can use the blender directly to mix like Qianjie. If not, we can transfer the "oil and coffee" mixture into a sealed bottle, seal it tightly, and then shake it hard to mix. The longer the mixing time, the faster the aroma will be extracted. (Note: This is not suitable for hot coffee. Please wait until the coffee drops to room temperature before starting operation)

After mixing is complete, we transfer the mixture to a sealed bottle and place it in the refrigerator for refrigeration. Refrigerate for more than 2 hours, and when the oil is completely agglomerated, it can be declared complete. The front street here was left directly on the whole night.

Then, we just need to take it out and filter out the clarified liquid through a filter paper cup. In this way, an oil-washed coffee is made! (The filtration time will be relatively long, so it is best to use multiple filter cups and filter paper to filter at the same time)

Although the appearance does not look much different from normal coffee, its taste is quite different from what you imagined. Because of the addition of butter, the taste and taste of the entire cup of coffee become very soft. Although it is a cup of deep-roasted coffee, the taste is not bitter at all. At the entrance, you can not only feel the aroma of coffee such as spices and chocolate of golden mantinin, but also the faint milky aroma brought by butter. Then Qianjie also made a pot of coconut oil washed cold extract coffee. The ratio of oil to coffee here is 1:4. Because we wanted to amplify the aroma of coconut and then the concentration of cold extract was relatively high, a larger proportion was used. Make it. The steps are the same, except that the cold extraction temperature needs to be appropriately increased.

The oil-washed coffee made with this ratio will be more prominent in terms of flavor and taste than the former. The flavor of the cold extracted coffee itself is combined with the aroma of coconut, making the layering more abundant, and the taste is soft and mellow, which is very good. It is worth mentioning that in addition to the filtered coffee liquor, the oil blocked by the filter paper also has the aroma of coffee due to long-term contact with coffee. Using it for cooking may also be a good choice!

So, the above is all the content shared on Qianjie this time. Everyone can refer to it and then DIY oil washing coffee at home. It is very simple. Just be careful not to stir it everywhere when stirring ~

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