I am a Black Walnut Butter Box. Born from a question about messy butter, I turned critique into craftsmanship. Half practical, half poetic. I keep mornings smooth.
When Ryuji Mitani first read Juzo Itami’s Women! as a high school student, one line stuck with him: “Why haven’t we designed a container that won’t make a mess of butter?” He looked into his own refrigerator and saw the problem firsthand — a greasy, cloudy butter case that felt like an afterthought.
Years later, as a woodworker, he finally answered that challenge with this Butter Box. It’s simple and very functional, shaped from black walnut with a snug-fitting lid and interior butter knife for spreading. Half a pound of butter fits perfectly inside, and the surface wipes clean with ease.
What I love most is how it came from something as ordinary as a moment in front of the fridge and a passing thought about life to become one of Mitani’s most enduring designs. It’s a reminder that even the smallest frustrations can lead to objects that improve our lives every day. Previously made in cherry, we love the new walnut version version and the contrast it provides against creamy butter.
Black Walnut Butter Box was curated by Stevenson Aung
Maker: Ryuji Mitani
Designer: Ryuji Mitani
Dimensions:
3.3” (w) x 5.8” (l) x 2.0” (h) or 84mm (w) x 147mm (l) x 51mm (h)
Weight:
8 oz or 230 g
Materials: Black Walnut, Oil Finish