Koichi Ishii

The Climb

Early in his career, Koichi Ishii worked as a cook at Country Station restaurant on San Francisco’s Mission Street. That kind of station work teaches the basics that stay with a chef: repetition, timing, clean execution, and attention to the small choices that hold a dish together. For soba, that discipline matters. It is a craft built on control, and Koichi’s early kitchen work became part of that foundation. Today, Koichi Ishii is Soba Chef of Ippuku and Soba Ichi and co-owner of Soba Ichi. Handmade soba asks for a steady hand and close attention to flour, water, and timing, and his work sits squarely in that lane. The throughline in his career is consistency: a methodical approach that keeps the craft at the center.

Today

At Soba Ichi in West Oakland, Koichi Ishii works from a co-owner role that keeps the focus on the food and the method behind it. The setting is direct and practical, which suits a style of cooking that depends on restraint, repetition, and exactness. His work there reflects a long practice of shaping one discipline and maintaining it with care.

Signature

Koichi Ishii's signature dishes include Soba-no-Yamagata with Vegetables and Katsuobushi. Handmade soba sits at the center of the plate, with vegetables and katsuobushi arranged to add texture, aroma, and depth. The dish works through balance rather than excess, and each element serves the whole.

In Their Words “I highly recommend weighing both the flour and the water, as it is much easier to be accurate that way.” That advice is practical and exact. It treats precision as part of the process, not an afterthought, and points to the kind of consistency that handmade soba demands. “For the remaining vegetables and for most vegetable prep in a restaurant, I like the gyuto better.” That preference shows the same attention to tool choice as to technique. In the kitchen, the right knife supports pace and control without changing the purpose of the work.

Recognition

The specialty is handmade soba. On one preparation, he says, "This style of soba, a vegetable salsa over a nest of noodles, is traditional in Yamagata, my home." The dish connects technique to place, with Yamagata named as the source of the style. In Koichi Ishii’s hands, handmade soba is a precise practice shaped by patience, accuracy, and respect for a regional form.