Store all kinds of food at home, especially fermented foods. Store cookies, sugar, flour, even jam. Breathing valve automatically exhumes gas that builds up inside the canister when it stores fermented food. Screw-top, airtight lid, the silicone inside the lid prevents external air from reaching within, ensuring the freshness of the content. The transparency of glass allows the inner content to be seen. The wide opening of the canister makes washing and cleaning easier. The canister (square) fits the door pockets of most refrigerators. The sophisticated dodecagon design will add sense of beauty to your kitchen. Do not use the canister in direct heat, ovens, or microwave ovens. Do not disinfect it with hot, boiling water. Do not keep the canister in the freezer. Wash with a soft sponge to prevent scratches. Do not forcefully open or change the breathing valve, as strong or sudden impact can damage canister. Keep the canister with its lid-side up. (the food content inside the canister may spill out or leak through the breathing valve if you slant the canister or place it upside down.) Fill the canister up to only 70-80-percent when storing fermented food. (such foods may be expanded during fermentation process, thereby closing the breathing valve and breaking the canister.) Do not place the canister under direct light or nearby flammable materials. Food residues around the breathing valve or on the lid may congeal. Wash the residues away as soon as possible. After washing, make sure the lid is completely dry before using again. (shake the lid to get rid of the excess water in the valve. Allow the lid to dry up naturally.)