1.Excellent air permeability
Compared to other types of tea, Pu'er tea does not require complete airtightness. On the contrary, a certain amount of contact with the air can actually promote the later transformation of Pu'er tea.
Cotton paper has the characteristic of high air permeability and can be compact yet not completely sealed. Therefore, compared with other packaging papers such as kraft paper, cotton paper is more suitable for packaging and preserving Pu'er tea, which is beneficial for its subsequent transformation.
2. Absorbing Odors
Tea has a strong adsorption property. It is very prone to absorbing unpleasant odors and flavors, which can affect the quality. At such times, a good-quality tea can be wasted unnecessarily.
Cotton paper has a very good ability to absorb odors. When the odor is adsorbed onto the cotton paper, it can reduce the amount of odor absorbed by the tea leaves, thereby protecting the tea leaves. However, if you notice any odor on the cotton paper, you must replace it immediately, because over time, the odor is inevitable to be adsorbed onto the tea leaves.
Nowadays, many tea enthusiasts will put tea cakes into cotton paper tea storage bags, which can help preserve the tea better.