A petty knife (ペティナイフ, Peti-naifu) is a compact general-purpose knife that’s considered one of the most useful tools in the kitchen. Typically measuring 120mm to 180mm, it is the go-to blade for peeling fruit, trimming meat, slicing herbs, and handling other detailed tasks in both home and professional kitchens.
With its thin blade and narrow profile, the petty knife works well for breaking down foods without damaging delicate textures. It’s ideal for tasks such as deveining shrimp, cutting citrus for garnishes, or slicing herbs cleanly. The pointed tip provides accuracy, while the lightweight design offers control when working around bones, joints, or tight spaces.
Crafted by Japanese blacksmiths using steels like Blue Steel #2, Silver Steel #3, and VG10, petty knives are valued for their balance and versatility. They can easily deal with detailed tasks and break down food. Moreover, many chefs also choose them as a travel knife due to their compact size and reliable cutting performance.
A minimalist knife set with a petty knife and a full-size gyuto knife or a santoku is perfect for complete daily food preparation coverage.
