The body is porcelain — the only non-ceramic parts in contact with the coffee are the filter and the silicone stopper in the drain. The on/off valve at the bottom allows for greater control over the brewing process, and also makes for a less drippy coffee experience overall.
It is easy to be put off of immersion drippers when reading about them online — you can certainly complicate your morning coffee in search of the perfect cup (and have a lot of fun doing so) — but using these brewers doesn’t have to be involved.
Here’s a simple visual guide to using your immersion brewer:
1. Measure out 15g of beans (for a 250ml cup), and grind them to a medium-fine grind. Begin heating your water.
2. Set the switch to the closed position. Place your filter into the steeping filter (the Bonavita uses a #4). Fill the filter halfway with hot water, place the cover on, and let it sit for a moment to preheat the ceramic. Drain the water, and set the switch to the closed position.3. Add your medium-fine ground coffee.
4. Ensure your switch is set to the closed position. (This part is so important we felt the need to state it twice!)
5. Slowly add the hot water — ideally, your water should be just off the boil. Stir gently, and put on the cover. Let your coffee steep for 1.5 – 2 minutes.
6. Remove cover and stir. Replace cover and let sit for another 1 – 2 minutes.
7. Place the dripper on your cup, open the valve, and let the coffee filter through.
8. When the coffee has finished dispensing into your cup, remove the dripper and use the cover as a coaster to keep the mess off your counter top!