Is Korean Corn Tea (Oksusu Cha) Caffeine-Free?
Korean corn tea — 옥수수차 (oksusu cha) when made from roasted kernels, or corn silk tea when made from the silky strands — contains zero caffeine. It's one of the gentlest, most widely drunk caffeine-free teas in Korea.
Zero caffeine. Subtle, sweet, all-day hydration.
How it compares
Corn tea is the daily cousin of boricha in Korean households — served cold in summer, warm in winter. Because it's a grain/plant-part infusion (not a tea leaf infusion) it's zero caffeine.
| Drink | Caffeine (mg) |
|---|---|
| Corn tea (8 oz) | 0 |
| Boricha (8 oz) | 0 |
| Buckwheat tea (8 oz) | 0 |
Caffeine-free picks we recommend
Wellness-focused corn silk tea with diuretic properties. Zero calories, naturally sweet. Traditional Korean health drink.
Sweet, naturally flavored roasted corn tea. Tastes like popcorn! Korea's favorite summer drink. Zero calories.
Premium roasted corn kernels for authentic sweet corn flavor. Korea's beloved summer refreshment.
Frequently asked
Is corn silk tea different from corn kernel tea?
Yes — different parts of the same plant. Silk tea is made from the thin fibers inside a corn husk; kernel tea is made from toasted kernels. Both are caffeine-free.
Is corn tea safe during pregnancy?
Caffeine-wise yes (zero). Corn silk has traditionally been used as a mild diuretic — if you have kidney issues or are pregnant, clear it with your doctor before making it a daily habit.