Coffee review

How to make Italian espresso depth charge coffee Sprite soda Is American coffee good?

Published: 2026-04-10 Author:
Last Updated: 2026/04/10, Friends who often read articles on the front street should know that in addition to the conventional method of adding water,"American style" can actually be presented in many different forms. For example, the all-ice American style without adding water, the bubble American style with replacing water with carbonated drinks, and the air is injected to produce rich foam American quicksand, which is concentrated and frozen into blocks in advance and added

Friends who often read articles on the front street should know that in addition to the conventional method of adding water,"American style" can actually be presented in many different forms. For example, the all-ice American style without adding water, the bubble American style of replacing water with carbonated drinks, and the American style of injecting air to generate rich foam quicksand, and the American style of ice bricks that are concentrated and frozen into blocks in advance and then melted with water... Each method has its own characteristics and is also very different in taste.

Recently, perhaps inspired by the classic cocktail "Depth Bomb", the Nth way to play American coffee has become popular on YouTube. It is first put the espresso into a mini shot cup, apply a layer of juice to the bottom with a lemon slice, stick with a little sea salt, and then drop it with gravity into a clear carbonated drink.

Because the whole process only took 2 to 3 seconds and the reaction was very violent, the cup containing the concentrate was thrown into carbonated water like a "bomb" and finally formed a gorgeous bubble. So netizens named this innovative American cup of coffee ""Sparking espresso bomb", which translates literally as" Italian concentrated bomb."

Front Street learned that, like other special American-style specialties, the materials and methods of this espresso bomb are not complicated. Just prepare espresso, sea salt, lemon slices and light-colored carbonated drinks. Here, caffeine is responsible for refreshing the brain, bubbles can stimulate our brain to secrete dopamine, and lemon and sea salt serve to replenish electrolytes, which seems to have formed a perfect combination.

To make this cup of Italian concentrated bomb, we need to use two transparent coffee cups, one big and the other. To achieve the best visual effect of "explosion," we must also be careful in selecting containers. It is best to control the capacity of the large cup to more than 300ml, with a wide mouth, so that the rising foam is not easy to spill out, while the small cup can at least hold a single concentration and ensure that it can completely enter the middle of the large cup.

In order to highlight the refreshing taste of iced coffee, we chose Qianjie today. Strawberry Sugar Espresso Italian blend extract concentration combines three well-known producing areas: Colombia, Costa Rica, and Ethiopia. When used to make espresso, it exudes sweet and ripe fruit aroma. The sweet and sour taste of grapes and berries immediately emerges, with the aroma of roses, and the aftertaste is almonds and cocoa, which is very suitable for making summer special drinks.

For the carbonated drinks part, Qian Street directly took a bottle of Sprite soda. One can provide sweetness, and the two can better show the picture of exploding bubbles because they are transparent.

The first step is to pour 120ml of soda into a large cup;

The second step is to find a clean plate, sprinkle with a handful of sea salt, and place lemon slices next to it;

The third step is to take 20g to the front street. Strawberry sugar Italian blend and extract twice resito, concentrate about 32ml, take about 25 seconds, use a small cup directly when receiving the concentration;

Step 4, rub the small cup containing the concentrate on the lemon slices a few times, and then gently stick it on the sea salt (be careful not to stick too much, otherwise the taste will be too salty);

Step 5, pay attention!! Don't rush to "throw bombs" here. Let's first put the bottom of the small cup close to the liquid surface of the bubbly water, and then pause for a while. At this time, you can see from the side that the sea salt and lemon will bubble like boiling when they are immersed in Sprite soda;

Step 6: After the bubbles have almost finished reacting, slowly let go and let the concentrated cup fall to the bottom. At this time, the coffee grease on the concentrated cup will react with the soda, and the foam brought by carbon dioxide will continue to surge upward. The dark coffee liquid seeps downward, and the impact is very obvious.

In terms of taste, the moment this Italian concentrated version of the depth charge enters the mouth, it has the fresh breath of lemon. The sweet sprite and the mellow coffee form a sweet and refreshing taste under the action of bubbly water. Because it contains sea salt, there is an illusion in front of the street that you are drinking Guangzhou's local drink-Salty Lime Seven.

Some tips on production

1. Because sea salt and lemon are added, if deep-roasted coffee beans are added, the "Italian concentrated bomb" will easily become "salty + sour + bitter". Therefore, when choosing a carbonated drink, you may wish to try something with sweetness. Flavor soda to neutralize the entire tonality of the coffee.

2. When making bubbly coffee, the thing we are most worried about is the violent reaction formed when pouring it, which will eventually be scattered all over the floor. After many attempts, Qianjie found that as long as only half of the cup was poured into it and gently stirred with a spoon a few times to let a small part of the gas evaporate first, this could effectively prevent coffee from overflowing.

3. Compared with ordinary bubbly American style, the biggest difference between the "Italian concentrated bomb" is that the entire cup of concentrated concentrate must be sunk into the bottom of the coffee, so the cup must be a heavy-bodied and small-capacity glass with sufficient gravity.

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FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。

Important Notice :

前街咖啡 FrontStreet Coffee has moved to new addredd:

FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou

Tel:020 38364473

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