Zero Waste, Bold Flavour: Why You Need a Vietnamese Phin Filter

The phin is a small stainless steel filter that makes Vietnamese coffee one slow drip at a time, and it is the easiest way to brew Phin Wave Coffee at home.

If you have ever had a cà phê (coffee) in Vietnam, you have probably watched one at work: a little metal cup perched on a glass, coffee dripping through while you sit and wait. No plug, no pods, no paper. Just hot water, ground coffee and a few minutes.

Here is what a phin is, how it fits your cups, and why we chose stainless steel.

                         

Size and fit

The phin is about 7 cm tall with an opening of about 7 cm, so it sits neatly across the rim of most everyday cups and glasses.

The wide base plate (10 cm) rests on top of the rim, so any regular cup, glass or mug with a rim narrower than the plate will work. No special glassware needed. Pop it on your favourite glass, add the coffee and water, and let it drip.

Why we chose stainless steel over aluminium

We went with stainless steel because it keeps the coffee tasting like coffee and the filter lasting for years. Aluminium phins are common and cheaper, but in our mind a little more flimsy and lower quality, so this was a deliberate choice.

• Clean taste. Stainless steel does not react with hot water or coffee, so nothing metallic ends up in your cup.
• Built to last. It resists dents, warping and scratching much better than lighter, softer aluminium, so it keeps its shape brew after brew.
• Easy to look after. A rinse under the tap and it is ready for tomorrow. It does not stain or pit the way aluminium can.
• Holds its finish. Stainless keeps its shine instead of dulling or discolouring over time.
• One less worry. Many people prefer not to have aluminium in direct, repeated contact with hot, slightly acidic drinks. Stainless steel removes the question.

Aluminium is lighter and costs less, and we get why brands use it. But if we are asking you to brew every morning with it, we would rather give you something that lasts.

Phin vs paper filters vs machines

A phin costs you nothing after the first purchase, needs no power and gives you a rich, full-bodied cup. Here is how it compares.

	Phin (stainless steel)	Paper filter	Coffee machine
Ongoing cost	None, reusable for years	Buy new filters	Pods, descaling, servicing
Waste	None	One filter per brew	Pods, capsules or filter papers
Power needed	No, just a kettle	No, just a kettle	Yes
Body and flavour	Rich and full, oils stay in the cup	Lighter, oils caught by the paper	Varies by machine
Strength control	You choose the dose and the wait	Limited	Often preset
Space and upkeep	Small, rinse and go	Small, needs a dripper	Bulky, regular cleaning

 

A few reasons we love it:

• Reusable. One phin replaces a drawer full of paper filters.
• Full flavour. The metal filter lets the natural coffee oils through, which suits a strong robusta like ours.
• Simple and portable. All you need is hot water. It works at home, in the office or on holiday.
• A little ritual. Watching it drip is a slow moment before the day gets going.