Goal

Determine preparation and taste tone differentials between fresh ground and pre-ground coffee.

Variables

• Beans: Redemption Rubén Ortega
• Grind size: 1Zpresso QS @ 60 (45.0mm)
• Water to bean Ratio: 17.0:1 (255g)
• Sweet to Acidity Ratio: 62:38
• Pour 3 water: 76.5g
• Pour 4 water: 76.5g

Beans: Redemption Rubén Ortega

Adjustments

• Coffee weight: 15g (pre-grind weight)
• Water to bean Ratio: 17.3:1 (260g)
• Sweet to Acidity Ratio: 65:35
• Pour 3 water: 78g
• Pour 4 water: 78g

Method: Tetsu Acidic and Medium

Target weight and time in parenthesis)

• 1st Pour (68g in 10s): Bang on
• 3 medium swirls
• Wait 45s
• 2nd Pour (36g in 10s): Easy one
• Wait 60s
• 3rd Pour (78g in 10s): Nailed it
• Wait 30s
• 4th Pour (78g in 10s): On fire this morning I tell ya
• 1 light swirl
• ​Lifted off​: 4:30

Beans: Redemption Rubén Ortega

Adjustments

• Coffee Weight: 16g (pre-grind weight). Bonus accidental gram.
• Grind size: 1Zpresso QS @ 2.0 (4.5mm)
• Acidity Ratio: 60:36
• Third pour water: 78g
• Fourth pour water: 78g

Method: Tetsu, Sweet and Light

Target weight and time in parenthesis

• First (60g in 10s): 3g over and 4s late it really is a slow start today.
• 2 light swirls
• Wait 35s
• Second (36g in 10s): Bang on but again not hard given the numbers here.
• Wait 35s
• Third (78g in 10s): 4g over 2s late what am I like??
• Wait 35s
• ​Fourth​ (78g in 10s)​:​ 3g over good grief just can’t catch a break
• One light swirls to settle the bed
• Bed ​Clear:​ 3:30

Beans: Redemption Rubén Ortega

Adjustments

• Ratio: 70:30
• Third pour water: 150g

Method: Tetsu, Acidic and Light (variation)

Target weight and time in parenthesis

• First (70g in 10s): 75g in 8s. Oops.
• 3 big swirls over 5s
• Wait 30s
• Second (30g in 10s): Spot on. Hardly a challenge, though.
• Wait 35s
• Third (150g in 20s): 5g over because I’m thirsty
• Bed ​Clear:​ 4:00(!!)

What the heck is this?

Beans: Redemption Rubén Ortega

Adjustments

• Grind size: 1Zpresso QS @ 2.1 (4.725mm)
• Ratio: 50:50. A sensible day after yesterday’s shenanigans.
• Third pour water: 150g. An additional 15g today so that it actually fills the mug.

What the heck is this?

• Coffee Weight: 15g (pre-grind)
• Grind size: 1Zpresso QS @ 2.0 (4.5mm)
• Pre-grind anti-static water: 3 drops in with the beans
• Water temperature: 88°
• Hario V60 01 brown filter
• Funnel warming water: 400ml @ 88°
• Water hardness: medium (calcium carbonate 100–200ppm)
• Method: Tetsu Acidic and Light (65:25. Ludicrous.)
• Beans: Redemption Rubén Ortega

What the heck is this?

• Coffee Weight: 15g (pre-grind)
• Grind size: 1Zpresso QS @ 2.0 (4.5mm)
• Pre-grind anti-static water: 3 drops in with the beans
• Water temperature: 88°
• Hario V60 01 brown filter
• Funnel warming water: 400ml @ 88°
• Water hardness: medium (calcium carbonate 100–200ppm)
• Method: Tetsu Acidic and Light (52:38)
• Beans: Redemption Rubén Ortega