Your cold brew could be contaminated with bacteria! How to avoid?

Cold brew gives people the experience of a refreshing, cool feeling along with the condensed but still clear and delicate notes of coffee beans. But did you know your cup of cold brew could be contaminated with bacteria? Why and How to enjoy a delicious and safe cup of cold brew coffee? Let’s find out with XLIII Coffee!

Cold brew has a high risk of bacterial contamination

Cold brew, also known as cold brew coffee, is a method of extracting coffee with water at low temperatures (which can be equal to or lower than room temperature) for a certain period (usually 24 hours). Experts say that low temperatures are the ideal environment for some bacteria to grow. Meanwhile, cold brew processing methods take place at low temperatures for a long time. Therefore, bacteria such as salmonella and E.coli can multiply vigorously and produce substances that affect health.

Additionally, because a cup of cold brew coffee has a lower acidity and is not exposed to high brewing temperatures, if it is not stored in the appropriate environment, away from direct light, the coffee can become spoiled. spoils, loses its brightness, and has a moldy, unpleasant aroma and taste.

cold brew có thể bị nhiễm vi khuẩn

Ngăn chặn nguy cơ nhiễm khuẩn của cold brew

Cold brew coffee researchers warn that there are currently very few publicized cases of consumers becoming sick from drinking poorly prepared cold coffee. But if prepared incorrectly, the substances produced in cold brew will still be harmful to the body if used for a long time. Therefore, in stores, bartenders need to understand and take as many precautions as possible.

cold brew có thể bị nhiễm vi khuẩn

Using incorrect brewing temperature and exposing coffee to air is the main cause of a cup of coffee containing many toxic substances. Therefore, when preparing cold brew, we should use fresh cold water to brew and not use ice to better adjust the brewing temperature. Additionally, any cold incubation lasting more than two hours should be stored in the refrigerator with a recommended incubation temperature of -1°C to 5.5°C (30.2°F to 41.9°F).

Besides, to avoid mold or bacteria growth, it should be consumed within three weeks of preparation. If you don’t use it in time, you can freeze the coffee (leave about 5% of the jar space empty so the liquid expands) to extend its shelf life.

cold brew có thể bị nhiễm vi khuẩn

A cup of cold brew coffee is truly attractive with its delicate aromas, and a wonderful feeling of relaxation and awakening. But it can also have harmful health effects if prepared incorrectly and using poor quality ingredients. Therefore, if you want to enjoy it, choose reputable coffee shops or learn carefully how to make it and use quality ingredients if brewing at home.

cold brew có thể bị nhiễm vi khuẩn

As a business pursuing sustainability, with customers and coffee as the focus, XLIII Coffee always focuses on the entire production and product supply process. Ingredients are carefully selected from specialty coffee lots that meet international standards from famous growing regions around the world. The preparation process is always carried out by highly skilled staff in a clean environment, with strict control of temperature, water quality and seed extraction process. So that every cup of coffee you enjoy ensures safety and original deliciousness. If you want to experience cool, fresh cups of cold brew coffee or need quality single-origin specialty coffee beans, come to XLIII Coffee to enjoy!

Follow XLIII Coffee’s Journal channel to update useful information about the coffee world

Articles you may be interested in:

– Is Nepal specialty coffee developing as prominently as expected?

– The path to consumers of naturally decaffeinated coffee variety AC1

– What are the similarities and differences between coffee and wine production?

  • Taste the Origin

Rift Valley Coffee Caucus #03757 – A Testament to Western Kenya’s Collective Spirit

Turning our gaze to the Great Rift Valley of East Africa, the fertile volcanic landscapes are witnessing an inspiring transformation. Moving away from fierce, survival-driven competition, smallholder farmers in Western Kenya have chosen to join forces, forging a resilient and unified network. The Rift Valley Coffee Caucus #03757 lot stands as the ultimate testament to this remarkable collective synergy.

  • Breaking News

Airworks Coffee & XLIII Coffee – A “handshake” that brings original flavors across borders

XLIII Coffee, alongside our key wholesale partner Airworks Coffee, officially announces the latest release of specialty coffee lots for the North American market. This event reaffirms our commitment to bringing original flavors across all geographical barriers to coffee enthusiasts.

Early access (for Subscribers of Airworks): 10:00 AM (PST) | Wednesday, April 29, 2026

General access: 10:00 AM (PST) | Friday, May 1, 2026

We invite our Customers and Partners to visit (airworkscoffee.com) for detailed information and to prepare for this special release!

  • Taste the Origin

Unveiling May Discovery Subscription: Nueva Alianza Mejorada #4731 & Nueva Alianza Mejorada #4732

The Discovery Subscription is a silent dialogue, a place where the soul of the connoisseur finds a harmonious beat with distant lands. Like a transparent lens, we become storytellers, meticulously peeling back layers of cultural sediment, the breath of the soil, and the human philosophies hidden within every coffee bean.

May arrives with brilliant streaks of golden sunlight, a time when we long to hide beneath the lush, dew-drenched canopies of Santa Teresa. Amidst the silence of the Andes, when compassion touches Mother Earth, what will we hear? Perhaps it is a sweet response that nature reserves solely for souls who know how to wait patiently.

  • Taste the Origin

Nueva Alianza Pacamara #4733 – The essence of Cusco with elegant jasmine notes

Nueva Alianza Pacamara #4733 is a testament to the miraculous terroir and dedicated cultivation of the renowned Cusco region. The combination of the characteristic Pacamara bean size and ideal altitude has forged a flavor profile of immense sophistication and depth. From the very first moment, this lot captivates with its elegant jasmine notes, radiating a gentle, pure fragrance akin to a flower blooming in the morning dew.

  • Taste the Origin

Nueva Alianza Orange Gesha #4737 – An expedition of recessive genetic traits into the sensory realm

In a world of authenticity, Nueva Alianza Orange Gesha #4737 represents the proud emergence of rare biological traits often obscured by nature’s universality. Carrying a recessive genetic code, Lot #4737 embarks on an “expedition” into the connoisseur’s mind, where record-breaking fructose concentrations are released to perfectly fill every sensory gap with absolute smoothness and purity.

Through washed processing and extremely-light roasting, vibrant citrus nuances and ethereal floral notes, once hidden deep within the genetic structure, now manifest with power, transforming the tasting experience into a journey of ontological completion, where the rarity of recessive genes finally reigns supreme in flavor.

  • Taste the Origin

Nueva Alianza Maragogipe #4735 – The “Giant” at the center of attention

Amidst a world of countless specialty coffee beans, Nueva Alianza Maragogipe #4735 emerges as a symbol of grandeur, instantly commanding attention with its distinct appearance. Affectionately dubbed the “Giant” for its impressively mutated “Elephant Bean” size, lot #4735 from Nueva Alianza stands as a testament to nature’s wonders in the Cusco region. Yet, its true allure extends far beyond its imposing exterior; hidden within these colossal beans lies a gentle “soul” blooming with pure floral and crystalline fruit notes.