Reusable Silica Gel Food Desiccant “Kan Karakan” 10g × 3 Sachets (Made in Japan).

Food-grade silica gel desiccant to help prevent moisture in tea leaves, coffee, snacks, seaweed, etc. The beads change color (blue → pink) to show when it’s time to refresh, and you can reuse it by warming it in a microwave. Reuse guide: about 5 times (varies by conditions).