Data Analytics - AshGrind

customer loyalty and returns

Grinder Science

Retention vs Exchange: Two Numbers That Decide Freshness

What do retention and exchange rates reveal about your business’s freshness, and why should you pay attention to one over the other?

AshGrind Team
March 2, 2026

coffee s color shift

Espresso Technique

The Espresso Color Change You Shouldn’t Ignore

Beware the subtle color shifts in your espresso, as they reveal crucial clues about…

AshGrind Team
May 1, 2026

quick warm up limitations

Espresso Machine Buying Guides

Why Quick Warm-Up Isn’t Always the Best Upgrade

For optimal engine health, understanding why quick warm-up isn’t always the best…

AshGrind Team
April 30, 2026

bitter espresso not over extracted

Espresso Technique

Why Bitter Espresso Isn’t Always Over-Extraction

How factors like origin, roast level, and temperature influence bitterness can help you…

AshGrind Team
April 30, 2026

overlooking espresso extraction times

Espresso Technique

The Mistake People Make When Fixing Sour Espresso

The mistake people make when fixing sour espresso is focusing on surface adjustments…

AshGrind Team
April 30, 2026