Dark Matter Coffee · Unicorn Blood Espresso Blend

Sun, Jul 12, 2026, 1:42 PM (Shot 73)

DoppioFastShortDay 27 · Still excellent

Shot

Grind Setting40

Dose17.1g

Grinder Retention0g

Adjusted dose 17.1g

WDT UsedYes

Distribution ToolYes

Spring Weight30 lbs

Pre-infusion6s

FlowNormal

Shot Time21s

Stopped at22.7g (+7g drip)

Yield29.7g

Ratio 1:1.741.41 g/sFastShort

Target

Ristretto

No target recorded — closest to Ristretto (25.7g, 20–25s).

Taste

Balance

SourSlightly BitterBitter

Shot Rating

★★★★★

Notes

Targeting ristretto but lag made it slightly long. Flow was even throughout the shot. Taste is strong and balanced with bright and bitter notes resolving quickly

Drink

DrinkFlat White

Milkwhole

Milk Quantity100ml

Foam20ml

Overall Rating

★★★★★

Latte Art

Pollock

Good drink. Light coffee table, more milk and foam than usual. Latte art is a big blob again

Analysis

✦

AI Analysis

Good Shot

Summary

Diego pulled an intentional short shot targeting ristretto — 17.1g dose, 29.7g yield, 21 seconds, balance 5. Flow was even throughout and taste was strong with bright and bitter notes resolving quickly. The lag added ~7g beyond his intended stop point, landing this in Short rather than true ristretto territory.

What the Numbers Say

Time at 21s is Fast by your thresholds — just inside the Normal floor at 25s. Ratio at 1.74 puts this in Short range. Balance of 5 (Slightly Bitter) makes sense for a concentrated, short pull on a medium-dark bean — and the quick resolution you noted confirms it's not a problem extraction, just a slightly concentrated one. No signs of channeling; even bilateral flow throughout is a clean puck prep result.

The One Thing to Change

If ristretto is the goal, stop the pump about 7g earlier than your target yield to account for lag — so if you want 25g in the cup, stop at ~18g on the scale. If you were happy with this as a short pull, lock grind 40, dose 17.1g, target 28–32g yield.

Your 7g lag is consistent Bambino behavior. The shot tasted balanced and resolved cleanly — the slight bitter edge at this concentration is expected on Unicorn Blood. The only 'fix' is a timing adjustment for lag if you're chasing true ristretto, not a grind or technique change.

Bean Context

27 days off roast puts this squarely in peak window for a medium-dark washed blend — freshness is not a factor. The dark chocolate and caramel notes fit the strong, slightly bitter character you tasted. Quick-resolving brightness is consistent with the berry component in the blend. No extraction concerns here.

Progress

Four clean shots in a row on this bag with even bilateral flow — the WDT hard cap at 30 seconds is clearly working. The one-spout dropout pattern from earlier shots has not reappeared since you locked that discipline in.

Cached · Jul 12

Bean

RoasterDark Matter Coffee

BeanUnicorn Blood Espresso Blend

Days Since Roast27 days — Still excellent

Roast Date2026-06-15