Nowadays, coffee lovers like to use different ways to match filter paper to brew coffee. Although some people still use filter cloth or metal filter to brew, and most of people still choose to bleached or non- bleached filter paper. So what kind of filter paper will be better? one way degassing valve tells you.
Non-bleached filters paper do not have bright white appearance of bleach filters, but its production process will be slightly more environmentally friendly, because non-bleached filters paper do not require so many production process.
Most of the filter paper we seen is non-bleached, and the color of natural paper is brown, but unfortunately, if you use non-bleached filter paper for coffee brewing but forget to use hot water to wash the filter paper first, and you're likely to feel the paper taste when you drink coffee.
That means you may feel the paper taste of coffee which brew by non-bleached filter paper, and it depends on the quality of filter paper. However, no matter what brand of filter paper or how to make out, washing filter paper before brewing is the right way.
The main difference between bleached filter paper and non-bleached filter paper is bleaching problem, through a small amount of chlorine, or use oxygen to bleach. Although the safety problem of chlorine bleach filters paper was questioned in the 1980s, and now it has been proven that this bleached filter paper is safe to brew coffee. In addition, the bleached filters paper do not add extra flavor to your coffee when you are brewing coffee.
When you or your customer have high requirement on the coffee kit, please also remember to have your coffee bean packed with a coffee valve without filter.
Brewing methods have different requirements on the powder thickness, exhaust valves without filter is suitable for whole-bean product that can be grinded at home.
Brewing method and the storage condition are both affecting coffee taste, and the exhaust valve with filter installed on package is suitable for powdery product.
We recommend you keep coffee beans in containers with one-way degassing valve, it helps to prevent quality change and to extend shelf life during ‘resting’.