Surprising (Bikkuri) Hamburger Sauce

• 1 tsp minced, for sauteing Onion
• 3 tbsp Soy sauce
• 1 tsp Pure rice vinegar
• 1 tbsp Peach juice
• 2 tbsp Hon-Mirin
• 1 tbsp White wine
• 2 tbsp Sake

1. When grilling your hamburgers, add white wine diluted with water, cover with a lid, then after grilling, save 4 tablespoons of the remaining juice (together with any bits of minced onion).
2. While you're preparing the hamburgers, saute the minced onions, then put into a small sauce pan with the other sauce ingredients and the juice from Step 1.
3. Simmer for about 1 minute, then it's ready.
4. Drizzle a generous amount on top of a fluffy, just-grilled hamburger.
5. Sprinkle black pepper to taste to give a spicy touch.

onion, soy sauce, rice vinegar, juice, white wine, sake

Taken from cookpad.com/us/recipes/140627-surprising-bikkuri-hamburger-sauce (may not work)