u/fennelfrog

Long extraction time (3:1, under 1 min, and under 4 min for milk-based)?

Was at DAK coffee roasters in Amsterdam today and chatted with the barista.

In general I'm quite blown away by the coffee I've had there, at this point have tried 3-4 different espresso and it's some of the best I've had.

The barista was suggesting for espresso to aim for 3:1 ratio in under 1 min and to adjust based on taste from there.

For milk-based drinks he says they do a 4 min extraction, which sounds totally crazy to me.

They said that there is no such thing as "over extraction" if the beans are properly roasted.

This seems really counter to the traditional 2:1 in ~35s I read here.

In general, I know DAK does quite a light roast so you need to extract more to get the full range from it.

But can someone please explain this advice more to me? Just looking to learn.

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u/fennelfrog — 1 day ago

Hario Buono Pro skips from 96°C to 100°C. How much does that actually matter for pour over?

I just got a Hario Buono Pro and noticed that while it adjusts in 1°C increments, once it gets to 96°C it jumps straight to 100°C. So there’s no way to set 97, 98, or 99°C.

Is that normal? And for light roast V60s, how much does that missing configurability between 96 and 100 actually matter?

Feels like a bit of a bummer to pay this much for a kettle and not have full temp control in that range. Curious if I’m overthinking it, or if people actually find those temps useful.

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u/fennelfrog — 3 days ago

I've been sleeping on Persona blades

Was all in on Feather because Japan and because they're so known as the "sharpest" but kept getting knicks even with gentler razors and thought it was due to my technique. Switched to Persona with my grandad's Gillette from the 1930's and it's so smooth. Can do ATG on neck - which usually irritated like crazy and risked cuts - with ease. Really like them so far after several weeks, daily shaving.

Anyone else dig Persona blades?

EDIT - Meant Personna (with 2 n's) and I'm specifically talking about Personna Platinum

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u/fennelfrog — 3 days ago

Follow-up: I redid the Garmin vs Whoop 5.0 test with a Garmin HRM chest strap. They agreed to within 1.6 bpm

TL;DR: Avg HR within 0.1 bpm. Whoop 5.0 bicep band basically matched the Garmin HRM chest strap.

A bunch of people in my last post said the wrist optical on the Fenix wasn't a fair reference, so I redid it with a chest strap.

Setup

  • Garmin Fenix 8 paired with an HRM chest strap (ECG, the gold standard)
  • Whoop 5.0 on the bicep band, right arm (still Whoop's recommended placement)
  • Easy Z2 run, 34 min, ~5.4 km
  • Both started manually
  • Per-second HR from Garmin .fit and from the Whoop sync via Strava
  • Aligned by shape via cross-correlation (more on this below)

Numbers

  • Avg HR: Garmin 146.5 bpm, Whoop 146.5 bpm
  • Max HR: Garmin 155 bpm, Whoop 154 bpm
  • Mean absolute difference: 1.6 bpm
  • RMSE: 2.9 bpm
  • Pearson r: 0.94

For comparison, the previous run (wrist optical vs Whoop bicep) was MAE 2.6 bpm, RMSE 5.2 bpm, r=0.73. Swapping in the chest strap roughly halved the disagreement, as expected.

The weird thing

When I tried to line up the two streams by absolute clock time, the agreement was way worse (r=0.65). The cross-correlation found that Whoop's timestamps were systematically 44 seconds late vs the chest strap, across the whole run. Same peaks, same dips, same shape, just shifted ~44s later in time.

A few sanity checks:

  • Garmin's max HR (154) happened at 13:32:35. Whoop's max (154) happened at 13:33:14. That's 39s later.
  • Garmin ended at 13:57:59. Whoop ended at 13:58:36. That's 37s later.
  • The offset is the same whether you look at minute 1, minute 15, or minute 30.

Once I aligned by curve shape instead of clock, the two lines basically sit on top of each other for the whole run.

Could be a Whoop clock sync issue that day, a Strava export quirk, or a processing delay in how Whoop assigns timestamps. Curious if anyone else has seen this when comparing Whoop to a second device at the second level.

Takeaway

For average and peak HR over a workout, Whoop's bicep band tracks a chest strap basically perfectly. For second-by-second timing alignment with another device, expect a meaningful offset that you'll need to correct for.

u/fennelfrog — 3 days ago

Setting for auto steam on Bambino Plus?

Those using a Bambino Plus -- do you manage to get good latte art e.g. rosetta from the auto steam? If so, which settings do you use for froth level and heat?

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u/fennelfrog — 5 days ago

Is 500€ a good price for this Gaggiuino'd Gaggia Classic? [Budget 500€]

Gaggia is running on a V3 PCB

Right now I have a Bambino Plus paired with a DF64 Gen 2 grinder. I mainly make milk drinks, but also drink straight espresso sometimes. Usually light to medium roasts.

The Bambino has honestly been great for convenience, quick heat-up, and small footprint but I’d like more control and a more “enthusiast” machine.

One thing I do really like about the Bambino Plus is the near-instant heat-up and not waiting forever between brewing and steaming.

For people who’ve gone from a Bambino Plus to a modded Gaggia: does a PID/GaggiMate/Gaggiuino setup get reasonably close on workflow/speed while giving more profiling/control and stronger steam? Or does it still feel like a lot more waiting/fiddling day to day?

u/fennelfrog — 6 days ago
▲ 3 r/gaggimate+2 crossposts

€100 for a 2014 Gaggia Classic made in Romania -- good deal / worthwhile upgrade from Bambino Plus? [Budget €500]

Found a 2014 Gaggia Classic (SIN035U, 230V EU model, made in Romania) for €100. Assuming it powers on / heats / pumps normally, is that considered a good deal these days?

Right now I have a Bambino Plus paired with a DF64 Gen 2 grinder. I mainly make milk drinks, but also drink straight espresso sometimes. Usually light to medium roasts.

The Bambino has honestly been great for convenience and quick heat-up, but I’m starting to want more control/mod potential and a more “enthusiast” machine.

Main reason I’m interested is I eventually want:

  • PID or GaggiMate/Gaggiuino-style setup
  • stronger/more stable steam
  • faster heat-up or scheduled auto turn-on
  • generally a better workflow without jumping to a much more expensive machine

For people who’ve gone down this route:

  1. What maintenance items would you immediately replace on a 2014 machine?
  2. What upgrades made the biggest difference?
  3. Is GaggiMate enough for this use case or would you go full Gaggiuino?
  4. Roughly what should I budget all-in?
  5. Also, the label says made in Romania rather than Italy. Should I care about that for a 2014 Classic?

Curious whether this actually feels like a meaningful/worthwhile upgrade path from a Bambino Plus or not really.

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u/fennelfrog — 7 days ago
▲ 4 r/whoop

Why no treadmill activity mode?

Seems like such an obvious one and Whoop doesn’t have it? How do you track treadmill activity?

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u/fennelfrog — 9 days ago

How to improve latte art? Was going for rosetta [Bambino Plus, DF64]

Tips on how I can improve this latte art? Was going for a rosetta. Feels like I need to do a more vigorous downward motion for the pour so milk could be more distributed. I’m using auto foam on Bambino Plus at lowest foam and lowest heat setting.

u/fennelfrog — 9 days ago

Does this 18g puck depth look normal? [Bambino Plus / DF64v2]

Using a Normcore bottomless portafilter on my Breville Bambino Plus. The basket is supposed to take 16 to 18g, and this is what it looks like after grinding 18g, WDT, tamping, and using the Razor tool (with a lighter roast).

There still seems to be quite a bit of room above the puck after tamping. Is that normal / expected for this basket, or does it suggest something is off with my dose, grind, basket, or tamp?

Could this just be because the Razor tool is calibrated for Breville’s stock basket/portafilter, while I’m using a Normcore bottomless setup?

I’m able to get roughly 2:1 with my latest shot, about 35g out in 35s from 18g in, and it tastes okay in milk. But I’ve been getting some uneven-looking extractions from the bottomless, so I’m trying to understand whether the puck depth / headspace could be part of the issue or if this is totally normal.

Setup:

  • Breville Bambino Plus
  • Normcore bottomless portafilter
  • 18g dose
  • DF64 v2 grinder
  • WDT, then tamp
  • Using the Razor after tamping

Would appreciate any advice on whether this looks normal, or whether I should be dosing higher/lower or changing baskets.

u/fennelfrog — 9 days ago

Ricoh flash on GRIIIx - are you happy you got it?

I know Ricoh’s flash is 2-3x cost of others but I love the slim profile and pocket ability and am willing to pay if it’s actually good.

People who own it; do you like it and are you happy w it? Is it worth the money?

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u/fennelfrog — 9 days ago
▲ 2 r/whoop

Renewal up soon, upgrade to MG for free + take 1yr renewal?

Currently on Whoop 5.0 and my renewal is up in about 30 days. I’m thinking of taking the free upgrade to MG, but curious how others are thinking about it.

I know there’s been a lot of noise around Fitbit recently, and I do find the idea interesting, especially if the platform ends up being genuinely open. The main thing that would make me consider switching is if I could easily export the data and build my own analysis, dashboards, or connect it to Claude/OpenAI-type workflows.

That said, I still really like Whoop. The software is the main reason. The AI coach has become genuinely useful for me, I like Strength Trainer, and I like seeing all my trends over time. I also like that I can upload labs and keep everything centralized.

The “Whoop Age” itself feels a bit gimmicky to me, but I do like the underlying idea of seeing where I’m improving or slipping each week on actual determinants of health and longevity: time in strength training, zone 2, sleep time/consistency, etc. Same with the weekly plan. If I set goals that are actually meaningful to me, it’s useful to have Whoop track progress against them over time.

I’m getting close to a 1-year streak, so there’s also value in not fragmenting everything. Price isn’t really the issue TBH. I’m more trying to decide whether Fitbit or anyone else is actually likely to catch up on software, insights, coaching, strength training, lab uploads, trend tracking, weekly planning, etc. My gut is probably not, at least not soon.

For people considering the same thing, are you sticking with Whoop and upgrading, switching, or waiting to see how the Fitbit situation plays out?

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u/fennelfrog — 10 days ago
▲ 1 r/AskVet

In young healthy dog eating a WSAVA compliant kibble, is there an advantage / any evidence for supplementing with Omega3?

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u/fennelfrog — 15 days ago

TL;DR: Avg HR within 1 bpm. They only really disagree in the first 90 seconds.

Setup

  • Garmin Fenix 8 on left wrist
  • Whoop 5.0 on the bicep band, right arm (not the wrist, this is Whoop's recommended placement for accuracy)
  • Easy Z2 run, 31:40, 5.02 km
  • Garmin per-second HR from the .fit file. Whoop per-second HR pulled from the Strava sync (the Whoop CSV export only has summary stats).
  • Aligned by cross-correlation (Whoop trailed Garmin by 2s).

Numbers

  • Avg HR: Garmin 145.2 bpm, Whoop 146.2 bpm
  • Max HR: Garmin 160 bpm, Whoop 159 bpm
  • Mean absolute difference: 2.6 bpm
  • RMSE: 5.2 bpm
  • Pearson r: 0.73

What stands out

First 90 seconds: Whoop jumps to ~140 bpm almost instantly. Garmin shows the actual ramp from 110 to 150 over the first minute. Most of the RMSE comes from here.

~9 min mark: Garmin spikes ~10 bpm above Whoop for ~30 seconds, then snaps back. Looks like a Garmin cadence lock artifact (optical sensor briefly tracking step rate). Whoop didn't see it.

After warmup and outside that one spike, the two stayed within ~3 bpm for the rest of the run.

u/fennelfrog — 17 days ago

Just picked up a DF64v2 second hand, using a bottomless portafilter with a Sage Bambino.

Tried calibrating to true zero (found chirp while running), then backed off slightly.

Grinding near finest (near where I get the “chirp” sound), dosing 20g, still getting ~30g out in ~10s.

Grind looks pretty fine but shots are running way too fast.

At this point I’m wondering if something’s off with the grinder itself:

burrs not aligned or not parallel under load
top burr carrier not seated correctly
springs causing slight tilt while grinding
calibration still somehow off even though I hit chirp

Also noticing a bit of vibration / different sound at the end of grinding.

I did transport it home in a bag on the tram, was careful, but if these are prone to misalignment that could be a factor.

How should I troubleshoot / fix this?

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u/fennelfrog — 20 days ago