The World of Japanese Soy Sauce
Soy sauce is the soul seasoning of Japanese cuisine and is also one of the most frequently purchased Japanese ingredients by Macao's Japanese food kitchens. Different types of Japanese soy sauce vary significantly in flavor, salinity, color, and application scenarios. For Macao restaurant procurement managers, understanding the characteristics of various soy sauces and developing reasonable procurement combinations can not only improve dish quality but also effectively control food costs. Wholesale price ranges from MOP 65–95 per 500ml bottle for standard koikuchi, to MOP 180–340 for premium tamari and white soy sauce; Japan-produced varieties typically command a 2–3× premium over domestic alternatives.
Five Major Types of Japanese Soy Sauce
1. Koikuchi Shoyu (Dark Soy Sauce)
The most common soy sauce type in Japan, holding approximately 85% of the market share. It has a deep reddish-brown color, balanced flavor, and moderate salinity (about 16% sodium). With the widest range of applications: sashimi dipping sauce, sushi, teriyaki, fried rice, marinating, and sauce preparation. Representative brands: Kikkoman Muro Premium Marudaizu Soy Sauce, Yamasa, and YAMASA. This is the soy sauce type used in the largest quantities by Macau restaurants; bulk purchasing in containers (5L-18L) is recommended for cost control.
2. Usukuchi Shoyu (Light Soy Sauce)
Lighter in color than koikuchi, but with higher salinity (approximately 18-19%). Primarily produced in Kansai region (Tano, Hyogo Prefecture), it is an essential soy sauce for Kyoto cuisine and kaiseki料理. Suitable for dishes where preserving the natural color of ingredients is important: chawanmushi (steamed egg custard), nimono (simmered dishes), and clear soup. Representative brand: Higashimaru.
3. Tamari Shoyu
Primarily brewed from soybeans with minimal wheat content, it has the deepest color, thick consistency, and rich, sweet flavor with the highest glutamate content. Traditionally used for sashimi dipping sauce, teriyaki sauce, and red meat dishes. Representative brands: Yamakawa Brewing and Shoda Soy Sauce.
4. Shiro Shoyu (White Soy Sauce)
Made primarily from wheat with minimal soybeans, it has the lightest color (golden yellow) and highest salinity (approximately 20%), with a delicate, sweet flavor. Primarily used for refined dishes requiring the natural color of ingredients to shine, chawanmushi, and premium kaiseki appetizers. Representative brand: Shichifuku Brewing (Shiro Tamari).
5. Saishikomi (Double-Brewed Soy Sauce)
Double-brewed using soy sauce instead of saltwater, it has an extremely dark color and the richest flavor, with a strong sweet umami taste. Primarily used for sashimi dipping sauce ( Yamaguchi Prefecture's local specialty) and sushi garnish, used sparingly in general. Representative brand: Hashimoto Soy Sauce (Yamaguchi Prefecture).
Major Soy Sauce Brands Comparison
| Brand | Characteristics | Signature Product | Best For |
|---|---|---|---|
| Kikkoman | World-renowned, consistently high quality | Premium Marudaizu Soy Sauce | All-purpose, sashimi, stir-frying |
| Yamasa | Historic brand from Chiba Prefecture, known for umami flavor | Kelp Dashi Soy Sauce | Sashimi, hot pot, ramen seasoning |
| Manji | From Hyogo Prefecture, lighter color | Premium Soy Sauce | Cooking seasoning, teriyaki |
| Higashimaru | Expert in light-colored soy sauce from Kansai region | Ultra-Premium Light Soy Sauce | Kaiseki cuisine, steamed egg, simmered dishes |
Restaurant Usage Estimation Guide
Based on a 40-60 seat Japanese restaurant, the estimated average monthly soy sauce procurement is as follows:
- Dark Soy Sauce: 18-36 liters (main kitchen use)
- Light Soy Sauce: 6-12 liters (for simmered dishes and chawan mushi)
- Tamari Soy Sauce: 3-6 liters (sashimi dipping sauce)
- White Soy Sauce: 1-3 liters (garnish for refined dishes)
Five Key Considerations for Soy Sauce Procurement
- Brewing Method: "Traditional brewing" (natural fermentation, 180+ days) offers far superior quality compared to "blended brewing"
- Ingredient Quality: Soy sauce made with "whole soybeans" has richer flavor than that made with "defatted soybeans"
- Shelf Life: Unopened Japanese soy sauce typically has a shelf life of 1.5-2 years; after opening, refrigerated storage lasts 3-6 months
- Packaging Specifications: For primary kitchen use, select 5L-18L bulk containers; for specialty soy sauces and sashimi dipping sauce, choose 720ml-1L refined packages
- Organic Certification: Some upscale restaurants require organic soy sauce; confirm in advance whether your supplier can provide it
Inari Global Food's Soy Sauce Procurement Solution
- Direct from Japan: Imported directly from major brands like Kikkoman, Yamasa, and Higashimaru, ensuring authenticity
- One-Stop Procurement: All five soy sauce types available at Inari, eliminating the hassle of ordering from multiple suppliers
- Bulk Discounts: 5L/18L large drums available for cooking soy sauce, with better pricing for bulk orders
- Regular Delivery: Local delivery in Macau with scheduled restocking cycles to ensure kitchen inventory never runs out
- Quality Guarantee: All soy sauce products come with manufacturer quality documents, meeting Macau food safety requirements
Frequently Asked Questions (FAQ)
Q1: Which is saltier, dark soy sauce or light soy sauce?
Although light soy sauce (Usukuchi) has a lighter color, its sodium content is actually about 10-10% higher than dark soy sauce. When seasoning with light soy sauce, use less than you would with dark soy sauce to avoid overseasoning. The main advantage of light soy sauce is that it does not affect the color of ingredients, not that it reduces saltiness.
Q2: Which soy sauce should restaurants use for sashimi?
High-end sushi bars推荐使用溜醬油（Tamari），鲜味最浓郁，适合搭配高品质刺身。一般日料餐厅可选用优质浓口酱油（如龟甲万丸大豆酱油），性价比高。部分厨师也会以3份浓口加1份溜酱油自调刺身酱油。
Q3: 日本酱油和中国酱油有何差异？
日本酱油（特别是本酿造）发酵时间更长（6个月至2年），风味更复杂，带有自然的甜鲜和酸香；中国酱油一般偏向浓咸，甜度来源多为添加糖分。日料厨房应使用日本酱油保持料理风味的正宗性。
Q4: 酱油最少采购量是多少？
稻荷环球食品的酱油采购无最低量限制（以箱为单位），欢迎新客户先以少量试订确认品质，再决定长期采购量。
Q5: 如何判断日本酱油品质？
优质日本酱油应：颜色深红褐色而非黑色（过深可能添加焦糖色素）、闻起来有天然发酵香气（略带酒香）、味道咸鲜平衡而非只有咸味、成分表中无人工添加剂或氨基酸液。
Frequently Asked Questions
Which is saltier, koikuchi or Usukuchi soy sauce?
While Usukuchi (light soy sauce) has a paler color, its sodium content is actually about 10-20% higher than koikuchi (dark soy sauce). When seasoning with Usukuchi, use less than you would dark soy sauce to avoid oversalting. The primary advantage of light soy sauce is that it doesn't affect the color of ingredients, not that it reduces sodium.
What type of soy sauce should restaurants use for sashimi?
High-end sushi bars recommend Tamari (rich soy sauce) for its deepest umami, ideal pairing with premium sashimi. Regular Japanese restaurants can opt for quality koikuchi (such as Kikkoman Maneru Soy Sauce), which offers excellent value. Some chefs also create their own sashimi dipping sauce by mixing 3 parts koikuchi with 1 part Tamari.
What's the difference between Japanese and Chinese soy sauce?
Japanese soy sauce (especially naturally brewed) undergoes longer fermentation (6 months to 2 years), producing more complex flavors with natural sweetness and acidity. Chinese soy sauce tends to be saltier and more aggressively seasoned, with sweetness typically coming from added sugar. Japanese kitchens should use Japanese soy sauce to maintain authentic flavor integrity.
What's the minimum order quantity for soy sauce?
Inari Global Foods has no minimum order quantity for soy sauce (orders are by the case). New customers are welcome to place small trial orders to verify quality before committing to larger long-term purchases.
How to judge the quality of Japanese soy sauce?
Quality Japanese soy sauce should have: a deep reddish-brown color—not black (overly dark may indicate added caramel coloring), natural fermentation aroma (slightly with a hint of umami), balanced salty-sweet flavor rather than just saltiness, and an ingredient list free of artificial additives or amino acid solutions.
