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How to Make Butter Stretched Coffee? Learn to Recreate the Viral Butter Latte at Home

Published: 2026-01-27 Author: FrontStreet Coffee

Last Updated: 2026/01/27, Recently, adding butter to coffee has sparked another trend! Butter, also known as butter oil or milk fat, is a product obtained by separating light cream and skim milk from milk, then letting the cream mature, stirring, and undergoing various processes. Originally, the primary use of butter was in cooking to add flavor to food

Recently, adding butter to coffee has once again sparked a trend! "Butter," also known as butter oil or milk fat, is a product obtained by separating light cream and skim milk from milk, then letting the cream mature, stirring it, and performing various operations.

The Evolution of Butter in Coffee

Initially, the main use of butter was to season food during cooking. With improvements in butter production techniques and the advent of cold chain transportation, butter has spread worldwide! After becoming popular, butter is no longer used just for food. Adding butter to various beverages has long been practiced in different regions, including coffee! For example, in Singapore, adding butter to coffee and drinking it together has long become a daily routine for locals. Such a cup of coffee is locally known as "Kopitiam."

People first grind coffee beans into powder, then pour them into a cloth bag called "Sock" for brewing. After brewing, they add butter! And because the coffee beans used are of the Robusta variety, with a strong bitter taste, people also add condensed milk at the bottom of the cup to neutralize the bitterness. There's also the bulletproof coffee shared by FrontStreet Coffee some time ago, which gained popularity among fitness enthusiasts in the West due to its claimed fat-reducing effects! The main ingredients consist of black coffee, butter, and MCT (medium-chain triglycerides).

The bulletproof coffee made from these ingredients creates a feeling of satiety in people after consumption, suppressing their desire for sugar and other carbohydrate intake. During this period, as the body lacks food filling and remains in a continuous state of hunger, fat will replace food and be continuously burned by the body, thus achieving a fat-reducing effect! However, it's important to note that due to the presence of oil, this coffee can easily cause discomfort for friends with sensitive stomachs, so bulletproof coffee should be consumed with caution! However, the recent trending butter coffee is not one of these traditional specialties, because it didn't become popular online for its taste or effects after consumption. The real reason for its popularity is quite surprising!

The "String-Pulling Butter Coffee" Phenomenon

"String-pulling butter coffee" originated when a netizen had a sudden idea while making butter coffee - directly adding butter to espresso extraction, attempting to extract espresso with a rich butter aroma. Unexpectedly! Due to the use of a bottomless portafilter, the coffee machine pressed out the butter directly in solid form!

This process is very satisfying to watch, as the butter is slowly pressed out like noodles. Consequently, this visually striking "butter coffee" quickly went viral after the netizen posted it online! And its preparation method is as simple as described by FrontStreet Coffee: just lay butter in the espresso portafilter first, then pour in the coffee powder for tamping, and extract directly to achieve the "string-pulling" effect! Furthermore, because this effect is very similar to thread noodles, it has also been jokingly called "butter thread noodle coffee" by netizens.

Why FrontStreet Coffee Doesn't Recommend This Trend

However, FrontStreet Coffee strongly recommends against friends trying this, for two reasons: First, the coffee extraction will be very uneven. The reason we need to tamp the coffee powder in the portafilter is to ensure that during extraction, the coffee puck won't develop channels due to uneven distribution of coffee particles, which would cause uneven extraction flavors! However, adding block butter will inevitably change the layout of the coffee powder. When all the butter is pressed out, the structure of the coffee puck will change and collapse, and the taste of the extracted coffee is predictable (and due to the presence of butter, the coffee powder cannot reach the standard capacity of the portafilter)! Another factor is that solid butter needs to be used during preparation. Placing block butter under the coffee puck will significantly increase the initial extraction pressure of the coffee machine. For commercial coffee machines, this excess pressure can be released through the pressure relief function, but what about some home coffee machines without pressure relief? This practice could easily cause coffee machine malfunctions, requiring factory repairs and resulting in unnecessary expenses!

The Cleaning Nightmare

In addition, cleaning is not just about washing the portafilter! When the coffee machine releases pressure, it sucks up all the liquid from inside the portafilter! This means that all pipes from the distribution screen to the pressure relief valve will be coated with butter!!!! After FrontStreet Coffee made this string-pulling butter coffee, it took a full half hour of cleaning to remove the butter smell from the pipes, nearly requiring machine disassembly. Therefore, if you want to enjoy a cup of rich butter coffee, FrontStreet Coffee suggests that friends最好 separate the butter, melt it, and add it separately. This way, you can ensure the coffee has a complete extraction while also ensuring the butter blends well with the coffee, making the taste more pleasant~