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Home / Coffee Beans/ Why does latte taste sweet? Revealing the secret of coffee shop Italian blended beans, why milk needs to be frothed and heated to what degree for the best taste

Why does latte taste sweet? Revealing the secret of coffee shop Italian blended beans, why milk needs to be frothed and heated to what degree for the best taste

2026.10.20 FrontStreet Coffee 28



"Your front street latte is delicious! It has a faint candy flavor! What Italian blend of coffee beans do you use?"

"Did your latte add sugar? Why does it taste sweet? It tastes so good!!"


When customers come to Front Street and order a cup of latte coffee, they will involuntarily sigh like this. This article from Front Street will reveal why there is a faint aroma of wine in the latte coffee, and why the latte coffee can be sweet without adding sugar.

Revealing the secrets used in Front Street
Front Street Italian Bean BlendRecipe!
The emergence of Italian blend beans is actually because roasters want to use the characteristics of coffee from different producing areas to blend a unique flavor or balanced taste. Therefore, before blending the coffee beans, the baristas and roasters in Front Street will taste coffee beans from all over the world to gain an in-depth understanding of the flavor of the coffee and then construct the flavor structure of the blended coffee beans.


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Recommended popular Italian coffee beans - the classic blend of Front Street, which is suitable for beginners, learning latte latte art, and boutique coffee shops pursuing high-end positioning. For those who want to learn latte art at home, buy the Front Street Classic Blend. This is a medium-dark roasted Italian recipe composed of three production areas. Its design is inspired by the popular "Mamba" in ancient times, namely Mandheling and Brazil, in order to add aroma and oiliness. , the classic blend of Front Street also contains a small amount of Robusta. When extracted, it emits obvious aromas of butter, toast, and caramel biscuits. It has a strong flavor, a solid taste, and delicate oil. The extraction is very stable. It is a must-have home coffee for beginners.


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If you want to avoid dark roasted beans that are too bitter and light roasted beans that are sour, and you are a novice in making them for the first time, buy the moderately roasted Front Street Strawberry Candy espresso. This is an Italian recipe specially launched for those who like floral and fruity aromas. It combines the three major production areas of Costa Rica, Colombia, and Ethiopia, with the aroma of roses, citrus, grapes, and dried blueberries. When paired with milk, it presents the aroma of strawberry jelly beans.


Front Street Italian Coffee BeansHow to mix it?

When Front Street blends each recipe bean, it will be divided into four steps: clarify the blending purpose, determine the blending flavor, determine the blending type, and determine the blending ratio.

①The purpose of formula bean blending: to create a product that can be supplied for a long time and has a long-term stable flavor. When the quality of one of the coffee beans cannot meet the requirements or changes in the new production season, you can find similar coffee beans to replace them to achieve the purpose of stability. On the other hand, one bean makes up for the shortcomings of another bean.

② Determine the flavor of the recipe beans: Only by clarifying the goal can we know where we need to start. At the same time, it also tests the blender’s understanding of the existing coffee beans and the flavor of the coffee producing areas.
 

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③ Blending before roasting or blending after roasting: Blending before roasting is also called raw blending. The advantage is that the same roasting level can be used to make the coffee stable and uniform. The second is that it can reduce the number of roastings, and it can be roasted in one time, which improves efficiency. The same roasting level can also greatly reduce the difficulty of quality control. The disadvantage of raw spelling is that it has great limitations. Generally, raw spelling recommends coffee beans with a similar density.
 

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Blending after roasting is also called cooked blending. The advantage of cooked blending is that it can be roasted according to the optimal roasting degree of each bean to maximize the characteristics of each bean. When baking the Front Street Italian blend series, they are all blended using the cooked blending method. The disadvantage is that daily quality control and management will be more difficult, and if the roasting dates are inconsistent, you need to pay more attention to the bean raising time.

④ Determine the blending ratio: After completing the first three steps, you need to continuously try different blending ratios. For example, the Front Street Nuanyang comprehensive blended beans blended by FrontStreet Coffee are intended to be used for Italian coffee, so they are tasted by extracting Italian coffee, and espresso, Americano, and milk coffee are made respectively to finally confirm the performance of the blended beans.

Why is latte so sweet?
First, let’s take a look at how latte is made on Front Street. Front Street uses double espresso to make latte coffee. It uses 19-20g powder to extract 35-40g of coffee liquid. The extraction time is 26-30 seconds. Because the state of the blended beans is different every day, the espresso coffee must be adjusted every day to ensure the stability of the coffee flavor. In terms of milk, pasteurized fresh milk is used in front of the street. The purpose of choosing fresh milk is that it has a high butterfat content, and the milk protein and lactose can be better preserved. The step of choosing milk is also very important in making latte coffee.
 

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During the process of whipping milk, lactose breaks down into more sugars as the temperature of the milk rises and fuses with the milk. When frothing milk, milk fat will make the foam formed by milk protein more stable, and these foams seal the aromatic and sweet substances of the milk. When we drink these milk foams, the small foams will burst in the mouth, making us feel that this cup of milk is very sweet. This is why Front Street latte tastes sweet even without sugar.

How to pass the time
Lattemilk froth?
Before preparing to send, turn on the steam wand switch to release the condensed water vapor (turn off the switch after releasing). Then pull out the steam rod at a 45-degree angle, and use the cylinder nozzle to firmly fix the position of the steam rod. This time the steam vortex is counterclockwise, and the position of the steam rod is to the right of the cross in the center of the liquid surface. The steam rod is half buried. Turn on the steam switch, and you will hear a "squeak" and "squeak" sound. This is the whipping stage. Depending on the required thickness of the milk foam, the whipping time will be different (the longer the whipping time, the thicker the milk foam will be).
 

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Generally, it takes about 3 seconds to beat 50% of the milk to 60% of the amount (the thickness of the latte milk foam). The milk rotates in a unified direction to form a vortex. At this time, the steam holes need to be completely buried, and only heating is performed, no more sending. Do not bury the steam hole at the bottom. It is recommended to put it in the milk foam layer, which is helpful for flossing (making rough milk foam into a fine texture).


How much is the milk foam for latte coffee??
The ideal temperature for whipping milk is between 55-65°C. If it is lower than this temperature, the sweetness of the milk will not be stimulated as much as possible; if it is higher than this temperature, too much protein will be denatured. Excessive heating will change the taste of milk. In addition to producing a sulfur smell, it will also cause the separation of milk protein and water, produce milk residue, affect the taste and lose nutrients.
 

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How to make a latte?
Front Street recommends that the ratio of coffee to milk for making latte is 1:6.5, 40ml espresso: 260ml hot milk. Mix the milk and espresso in a circular motion to get a hot latte. The heating of fresh milk produces a better release of the sweet molecules of lactose. After mixing evenly with the espresso, the whole latte has the sweet taste of milk, which does not steal the limelight of the espresso. On the contrary, the flavor of the espresso is better reflected in the background of the milk. The flavor of Front Street's hot latte is as follows: the aroma of caramel, hazelnuts, and roasted chestnuts. The slight acidity of lactose and coffee collides to create a milkshake-like sweetness. The aftertaste is like hazelnuts and other nuts.



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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