Additive-free Steak Sauce with Onion and Vinegar - 生ステーキソースオニオン/ビネガー - 190gGourmet Onion Vinegar Steak Sauce This unique "raw" sauce is crafted using carefully selected ingredients blended with a proprietary method. The non heated process preserves the natural umami of the ingredients, resulting in a fresh and flavorful sauce. It captures the mild acidity and rich umami of onions, enhancing their sweetness while retaining the crisp tang of vinegar characteristic of raw sauces. The use of two types of onions creates an