Caffeine foam requires poor skill in milk fusion.

Caffeine foam requires poor skill in milk fusion.

The first is that the milk foam is 80% to 90% full, which can be solved by 10% less than dry.

The second is that the crema surface of the espresso is too shallow from the bottom of the cup, causing the foam to float on the crema as soon as the foam is injected. Solution: tilt the cup as much as possible to increase the depth of the surface and bottom of the crema meter. When injecting, inject it to the deepest point.

The third is that the foam is close to the cup when it is injected into espresso, so that the foam does not penetrate crema enough. Solution: 10-15cm higher than the cup mouth to inject milk foam, increase the acceleration of foam injection into crema, so that it can smoothly penetrate crema.

The fourth is to solve the problem by means of integration. If the foam is still white on the crema when it is injected (for a small amount, the surface is about 1 beat 3), then immediately reduce the amount of foam injected, make a circle in the cup, and then lift the flower jar up, you can flush the whitened one under the crema.

Fifth, when you pull flowers with seven-point full or six-point full milk foam, the crema will be washed away without increasing the flow. Solution: reduce the foam flow and slowly circle the entire crema until the blend is in place.

The choice of the milk tank is mainly the capacity and the shape of the cup mouth, which determines your use and the amount of coffee you produce, while the shape of the cup mouth determines whether you need to pull flowers or make a traditional cappuccino. Choosing a milk tank that is easy to use can not only improve the quality of the foam and the appearance of the coffee, but also effectively reduce the loss and waste of milk. Milk tanks are generally made of stainless steel, not only because they are sturdy and durable and not easy to deform, but also because stainless steel has good thermal conductivity, so we can know the milk temperature in real time through touch, which is very important to barists. so we rarely choose to use milk tanks made of plastic, glass and the like, with a capacity of 150ml, 600ml and 1000 ml. There are several mainstream specifications such as 2500 ml, of which the most commonly used is 600ml milk tank. The milk tank is too large or too small is actually not good for foam, and 600 ml is an ideal tank capacity. But for some coffee shops with a lot of busy business, a 1-liter or even 2.5-liter milk tank is also a way to improve efficiency.

The first step: first do fast low hit, hit until there is obvious resistance and continuous feeling; then do medium hit, also hit obvious resistance and continuous feeling; finally do high hit, hit as a whole have resistance and continuous feeling. Tip: pay attention to the height of the twitch.

Step 2: repeat the first step. In this way, the process of manual milking is completed. If you want your foam not to be too thick, to have a certain sense of flow, just take the first step. Pulling out the piston vertically after foam is helpful to drive out a lot of coarse bubbles. (since the picture has not been downloaded, we do not know the specific samples of the author's low, medium and high hits.)