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Home / Coffee Beans/ The difference between oatmeal latte and ordinary milk latte. How to make oatmeal plant milk latte? Why does oatmeal latte taste sour?

The difference between oatmeal latte and ordinary milk latte. How to make oatmeal plant milk latte? Why does oatmeal latte taste sour?

2026.10.20 FrontStreet Coffee 44

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Many friends are unable to fully digest the lactose content in dairy products, and are prone to adverse digestive reactions after drinking it, so they are unable to drink conventional milk coffee. But it doesn’t matter, since we are lactose intolerant, we just need to choose lactose-free “milk coffee”~ For example, oatmeal latte is a special “milk coffee” made with lactose-free plant milk instead of milk!


The reason why Front Street places the word "milk coffee" in double quotes is not to emphasize these two words, but because plant milks are not dairy products in the true sense, so the "milk coffee" made from them cannot be regarded as real milk coffee!


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What is plant milk?

Plant milk is a cereal beverage made from plant seeds (or fruits) rich in protein and fat and water. Because of the presence of protein, the color of the beverage looks closer to the milky white color of milk, so it has the title of "plant milk" (you can understand it by referring to soy milk)图片)。


Soybeans, walnuts, peanuts, almonds, and hazelnuts are all common raw materials for plant milk! Although there are many types of plant milk, when it comes to the most common plant milk product in coffee shops, it has to be oat milk!


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The success of oat milk is not only due to a certain chain brand, but also due to its unique texture. Tasting it directly, we can feel the abundant grain aroma and rich taste levels, which complement the coffee perfectly. Coupled with the attribute of zero lactose, the popularity of oatmeal latte has been in full swing in recent years.


However, many friends reported backstage at Front Street that the latte they made using oat milk was not only not as delicious as expected, but also had a very obvious bitterness, which was not as good as the latte made with regular milk.


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In fact, just as you need to pay attention to a lot of details when making a latte with milk, you also need to pay attention to a lot of details when making a latte with oat milk. Taking latte as an example, if we directly apply the formula of regular latte to make oatmeal latte, the performance of the coffee produced will indeed be much inferior.


But if we can slightly change the concept of making and redesign the formula used in an oatmeal latte, then the oatmeal latte may be more delicious than you think~ So Front Street will share the details of making a delicious oatmeal latte that deserve our attention.


Note 1: Selection of oat milk

In order to make a delicious cup of latte, we will specially find the milk that best suits the current coffee performance. The same goes for oatmeal latte! Oat milk produced by different manufacturers has great differences in taste and texture, so the first step to making an oatmeal latte is to choose the right oat milk!


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When paired with oat milk, the flavor of espresso must be prominent enough and mellow so that it can compete with the aroma of cereals. When making oat milk latte, the barista recommends two popular products, Front Street Classic Blend and Front Street Commercial Blend, as the most suitable. One of them combines the wild tones of Brazil and Mandheling, and the other is a formula rich in various nutty aromas. On this basis, a small amount of Robusta is added to increase the richness of oil and golden color.


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If you prefer complex nutty aromas such as almonds, almonds, and walnuts, we recommend the Front Street Premium Blend and the Front Street Black Cocoa Basic Blend. They both contain a large proportion of Brazilian coffee beans, so they provide a comfortable sweet and bitter taste and are extremely smooth in the mouth. Among them, the Front Street Premium Blend has the nutty, chocolate and caramel aromas and appropriate acidity of Colombian coffee; the Front Street Dark Cocoa Basic Blend combines the acidity of small ripe Yunnan plums. When ground into powder, it will exude the aroma of cream chocolate. It has a balanced taste and high adaptability. In addition to making latte, it can also produce various Italian drinks.


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Never use light-roasted coffee beans when making oatmeal latte, because they are heated for too short a time, have high hardness, and have a lot of sour substances. Espresso coffee is prone to insufficient extraction. When paired with oat milk, it is easy to cause the coffee to be weak and sour.


Note 2: Proportion issue

After we choose oat milk, the next thing is the proportion. Although the aroma of oat milk is not weak, its sweetness is inferior to that of milk. If we follow the same proportions and make an oatmeal latte, the coffee flavor will be more prominent.


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Therefore, we can appropriately increase the proportion of oat milk in the entire cup of coffee. In this way, the taste of coffee will not be so easy to cover up the oat milk, and the taste will naturally not be so bitter~


Also, because oat milk will stratify when left to stand for a long time, we need to shake it to restore its condition before use. The reason why many friends fail to make oatmeal latte is because they ignore this point.


Note 3: Latte art problem

This is the last detail that needs attention! Since oat milk has less protein than regular fresh milk, it will be more difficult to froth. If we use whipped milk to whip oat milk when making hot milk coffee, there is a high probability that the latte art pattern will drift and not be formed due to insufficient thickness of the milk foam in the oat milk.


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Therefore, when we whip oat milk, we can slightly increase the thickness of the milk foam. For example, the milk foam thickness of a regular latte is about 1cm. When making oat milk, the milk foam thickness can be increased by 0.5cm~1cm. This will make the pattern easier to form and the position will not easily shift.~



You can now buy the above coffee beans online at the Taobao store “FrontStreet Coffee” (前街咖啡). FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou, China, and its Guangzhou retail shop sells coffee beans only. The shop carries dozens of coffee beans from different origins around the world, including carefully selected single-origin beans for V60 pour-over and espresso. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers.

The FrontStreet 2013 Yunnan coffee beans sold in the store come from the Typica variety grown at FrontStreet Coffee’s own plantation in Yunnan. The name comes from the year the brand and the plantation were founded. You can buy these beans from China’s Yunnan origin at the Guangzhou shop and at FrontStreet’s Taobao store.

FrontStreet coffee beans are freshly roasted within 5 days and deliver consistently excellent quality and great value. Orders placed before 17:00 are shipped the same day, and most areas within Guangdong Province receive them the next day.

FrontStreet Coffee Taobao store: https://qianjiecoffee.taobao.com
Or search for “前街咖啡” (FrontStreet Coffee) on Taobao
Important Notice: FrontStreet Coffee has moved to a new address: 315, Donghua East Road, Guangzhou (coffee beans only)
Tel: 020 38364473

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