NXT Roasters

Here is an AI co-authored blog.
There’s something undeniably special about the aroma of freshly roasted coffee beans. It’s not just the scent—it’s the promise of flavour, energy, and ritual. Whether you're a casual sipper or a full-blown coffee aficionado, understanding what makes fresh beans so extraordinary can elevate your entire coffee experience.

What Happens During Roasting?
Roasting transforms green coffee beans into the rich, brown gems we know and love. During this process:
* Sugars caramelize, called the Maillard process, creating complex flavour notes.
* Acids break down, balancing brightness and bitterness. If beans are under roasted the coffee tends to be sour. There are some beans which have more than one roast point. A surprise was that the Sumatra tastes good when roasted Blond.
* Aroma compounds develop, giving each roast its signature scent.
The result? A bean bursting with potential—if brewed at the right roast level. (See above)

Why Freshness Matters
Coffee is at its peak flavour within 7–14 days after roasting. ***Do not believe this without verifying for yourself - people make marketing claims based on hearsay and convenience. Beyond that, oxidation begins to dull its vibrancy. The roasted beans expel CO2 in the first 24 hours after roasting which settles in the container because the density is 1.5X more than the air we breathe. This acts as an oxygen blocker providing the bag is not tilted pouring out CO2. Scoop out the beans for the day to keep the beans submerged in CO2. ***
Here’s why you should care:
* Better aroma: Fresh beans release more aromatic oils.
* Richer crema: Especially important for espresso lovers.
* Fuller flavour: Notes of chocolate, fruit, or spice are more pronounced.
**Aim to purchase hours old freshly roasted beans not week or months old beans.**

How to Brew for Maximum Flavour
Fresh beans deserve thoughtful brewing.
Try:
* Pour-over for clarity and control.
* French press for body and richness.
* Espresso for intensity and crema.

***Grind just before brewing, and store beans away from light and heat. To keep the benefits of the natural CO2 keep the beans in the original upright bag. A good burr grinder gives you brewing options.***

Here is a bit more information for those that do not have a centrifuge. Essentially this is a comparison of the amount of solids in paper filtered coffee and unfiltered coffee. The Espresso tube is included for extra information.

The unfiltered coffee is decanted for 4 minutes before the sample is taken even though most of the solids have settled within the minute.

All samples were spun at 10k rpm for 5 minutes.

A follow up comparison will be the separation of regular ground coffee. By the very nature of the process it has to be filtered but it might be possible with some patience to photograph an unfiltered sample. A possible addition would be the comparison of burr ground coffee to blade style ground coffee.

The photos do give an indication of the turbidity which, in my view, is a good indicator of the amount of coffee solubles.