[Kim Jin-ho's Water and Coffee Story] Designed Processed Coffee vs. Cafe Coffee, The Winner of 'Real Fresh Coffee'

In the busy daily lives of modern people, RTD (Ready-To-Drink) coffee filling the refrigerators of convenience stores and supermarkets is truly a convenient presence. You can enjoy consistently flavored coffee anytime, anywhere by simply inserting a straw.

However, the price of this convenience that we consume unconsciously is none other than coffee's 'freshness'. This article explores why one must head to a cafe rather than a convenience store to drink real coffee, examining the hidden secrets of the manufacturing process.

■ Taste Designed in Factories, The Manufacturing Process of RTD Coffee

Looking at the mass production process of RTD cafe lattes commonly found in convenience stores, one can see that they follow an entirely different track from coffee consumed at cafes.

RTD beverages are produced in thoroughly sterile facilities with absolutely no bacteria. Essentially, milk, coffee liquid extract, and purified water (or distilled water) with filtered minerals are used as the base to maintain product uniformity.

■ Why RTD Coffee Has a Long Shelf Life

Natural coffee sold at cafes has no preservatives, making long-term storage impossible, and its taste and aroma deteriorate within just a few days.

In contrast, factory-type RTD coffee can be stored for up to 2 years. This is because it undergoes ultra-high temperature sterilization (UHT) or retort processing, and over 20 types of additives and seasonings such as artificial flavoring, emulsifiers, and acidity regulators are added to prevent deterioration during distribution and maintain consistent flavor.

The problem is that in this powerful high-temperature sterilization and processing, most of coffee's delicate volatile aromas and nutrients are destroyed. Ultimately, the structure relies on precisely calculated chemical additives and artificial flavors to fill the gap left by the lost unique aroma of the beans.

The taste that consumers experience from RTD coffee is not the freshness of beans, but rather that of a well-designed processed food.

■ Dead Water and Additives Concealing the Essence of Coffee

In mass production factories, water with completely controlled minerals is used to prevent equipment scale formation and prevent product precipitation.

However, minerals in water are the key driving force for extracting coffee's diverse components and enriching its flavor. From coffee pressed with mineral-free water and covered with additives, it is difficult to expect the living vitality unique to the beans.

On the other hand, coffee extracted by a barista at a cafe is like a living organism where beans and water meet. There is no room for emulsifiers or artificial flavors for long-term storage, and only the fresh essence of freshly roasted beans is contained in the cup.

■ Why You Should Buy Real Fresh Coffee at a Cafe

Good cafes clearly understand the value of 'water', which comprises 98% of coffee. Unlike the sterilized distilled water in factories, cafes manage water according to the local water quality characteristics.

In particular, South Korean tap water is characterized by soft water with an adequate amount of minerals inherently included. In such an environment, equipment corrosion must be worried about more than scale concerns, and the coffee's bland taste must be guarded against. Therefore, it is advisable to avoid using scale suppressors, hydrogen ion, and sodium filters that negatively affect coffee flavor.

To address this, trendy cafes recently are adopting mineral maker water purification filters that, instead of excessive purification, preserve minerals in water healthily suited to Korean water quality. Coffee extracted with customized water that optimally brings out the acidity and sweetness of beans represents the 'pinnacle of freshness' that factory-manufactured beverages can never imitate.

■ Freshness is an Uncompromising Value of Coffee

Ultimately, the difference between convenience store coffee and cafe coffee is not simply a difference in 'where to buy'. It is a choice between drinking a processed food that artificially replicates flavor with over 20 additives to extend shelf life, or enjoying 'real coffee' born from the meeting of freshly roasted beans and water with living minerals.

If you want to experience real fresh coffee without compromising with artificial flavors, now you must open the door to a cafe filled with a barista's conviction, rather than the convenience store refrigerator.