• Common Product Name: Ibushi Kunsei Shoyu (燻製醤油) — Smoked Soy Sauce See our guide to Japanese soy sauce types.
• Volume: 30ml (1.0 fl oz), precision dropper bottle
• Ingredients: Soybeans (Hokkaido, Japan — naturally cultivated), wheat, salt, rice
• Allergens: Contains Soy, Wheat. Additive-free. No preservatives. Naturally cultivated base ingredients.
• Shelf Life: Approx. 24 months (unopened)
• Storage: Cool, dark place; refrigerate after opening See our full storage guide.
• Producer: Yuasa Soy Sauce Co., Ltd.（湯浅醤油有限会社）
• Producer Location: Yuasa Town, Arida District, Wakayama Prefecture, Japan

The dropper bottle format was a deliberate choice by Yuasa Shoyu: smoked soy sauce at this concentration is a finishing condiment, not a cooking sauce. The precision of the dropper — a few drops measured and placed, rather than a splash poured — reflects how the brewery intends this product to be used: as the final touch on a completed plate, the way a chef might finish a dish with aged balsamic or fine finishing oil. The smoking adds a layer of complexity to the naturally cultivated base — wood fire and fermentation, two of the oldest flavor-building techniques in human cooking, combined in 30ml of deep amber liquid.

The aroma opens with immediate smoke — clean and wood-forward rather than acrid — followed by the deep, complex fermented-grain character of the naturally cultivated base. On the palate, the smoke integrates with the umami rather than competing with it: this is not a sauce that tastes of smoke plus soy, but of a single unified flavor that has both qualities at once. The finish is long and warm. A single drop on a piece of food changes the dish measurably; three drops transform it.

The dropper format invites experimentation: two or three drops over a fried egg, sunny-side up, in the final moment before serving; one drop pressed into the surface of a piece of sashimi before eating, in place of standard soy; three drops into a bowl of ramen or udon at the table, stirred in slowly; used as a finishing salt alternative in cocktails — a single drop in a whisky glass or over a Bloody Mary adds extraordinary depth; pressed gently into the cut surface of grilled steak or duck breast as a finishing touch; one drop over a warm oyster on the half shell; mixed with butter for a smoked umami compound to finish pasta or risotto.