Okonomiyaki

Name: Okonomiyaki
Cuisine: Japanese
Ingredients: 2 large eggs; 1 1" piece ginger, peeled, finely grated; 2 garlic cloves, finely grated; ⅓ cup all-purpose flour; 1 Tbsp. instant dashi powder or fish sauce; 2 Tbsp. soy sauce, divided; Kosher salt; ⅓ large head of cabbage (about 12 oz.), very thinly sliced (use a mandoline if you have one; about 3 cups); 1 small onion, very finely chopped; 5 bacon slices, halved crosswise; ½ cup ketchup; 1 Tbsp. Worcestershire sauce; Mayonnaise (such as Kewpie) and furikake or sesame seeds (for serving)