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Mustard
Korean inks in the Delicious and Hangul-inspired Hun Min Jeong Eum series, pairing saturated colors with Korean names.
Paper & pairing
Warm tones (oranges, yellows, ambers) show strong contrast between light and dark areas of each stroke, which is part of why they're popular with broader nibs. This ink will behave predictably on most fountain-pen-friendly paper. Cheap, highly absorbent paper (standard copier paper) will dull any ink's saturation and can cause feathering or bleed-through with wetter nibs.
About 3 Oysters
3 Oysters is a South Korean stationery brand producing fountain pen inks and pens in Korea. Its ink range centers on the food-and-color-themed Delicious series and the Hun Min Jeong Eum series, the latter named after the 15th-century document that introduced the Korean Hangul alphabet, with colors carrying Korean names like Jebi (swallow) and Saseum (deer). The inks are known for saturated colors, good behavior, and generously sized 38 ml bottles.
Storing and using the bottle
Bottled fountain pen ink has an effectively long shelf life when kept capped and out of direct sunlight — most inks remain usable for years. The main risk isn't the ink spoiling, it's a pen sitting inked and unused for weeks: that's what causes clogs, not the ink's age.
Frequently asked questions
Similar shades By colour distance
Color shown is a close digital approximation of a typical swatch, not a calibrated color match.