Drip Bags vs Phin Filter: Which Should You Use?

We sell phin filters, so treat what follows with appropriate suspicion. But the honest answer is that these two things solve different problems, and most people who drink Vietnamese coffee regularly end up wanting both.

Strength: phin wins, comfortably

A phin takes around 20g of coffee to 100ml of water, a 1:5 ratio, and drips for four to five minutes. That's a long contact time and a lot of coffee for a small amount of water, which is why phin coffee comes out thick, concentrated and genuinely strong.

A drip bag holds roughly 10g and you pour 150 to 180ml through it in under a minute. Do the maths and it's a completely different drink: closer to a good filter coffee than to Vietnamese coffee as you'd get it in Hanoi. Perfectly nice. Not the same thing.

If strength is the point, and with Vietnamese Robusta it usually is, the phin is the tool.

Convenience: no contest the other way

The phin needs the phin. A drip bag needs a mug. That's the whole comparison.

Hotel room, campsite, office kitchen, in-laws' place at Christmas, aeroplane tray table with the cabin crew's hot water. The phin is a wonderful object that you will absolutely leave at home. The drip bag lives in a jacket pocket.

Iced coffee: only the phin

This one is decisive. Proper ca phe sua da needs a concentrate strong enough to survive condensed milk and a glass of ice. Phin coffee is built for exactly that. Drip bag coffee gets swamped and you end up with sweet brown milk.

Same goes for salt coffee, egg coffee and coconut coffee. Anything where the coffee has to punch through something rich wants a phin.

Ritual: depends what you want from your morning

The phin's four minutes are the point for a lot of people. It's a small enforced pause, and it's central to how coffee works in Vietnam. A drip bag has no ritual at all, which some mornings is exactly what you want.

Cost and waste

A phin is a one-off purchase in stainless steel that will outlast most of your kitchen, with no filters and no waste beyond the grounds. Drip bags are single-use paper, and you pay per cup. Better than pods on both counts, worse than a phin.

The honest recommendation

Buy a phin for home. It makes a better cup, it costs nothing to run, and it's the only way to make the drinks Vietnamese coffee is actually famous for. Our Phin'omenal Pair bundles one with a bag of Buffalo Robusta, and the brewing guide takes ten minutes to learn.

Then keep drip bags for everywhere else. They're not a replacement for the phin. They're what stops you drinking instant coffee at a campsite.