A quick, glossy, tangy-sweet homemade okonomiyaki sauce made from common pantry staples with optional boosters for extra depth. Whisk together in minutes for drizzling on okonomiyaki, noodles, fries, and more.
For extra gloss without simmering, whisk in 1/4 teaspoon cornstarch and warm gently. Adjust thickness with a short simmer or a few drops of water if needed. Store in a clean airtight container in the refrigerator for up to 2–3 weeks; stir before using. Variations: add smoked paprika or liquid smoke for smokiness, gochujang or sriracha for heat, apple butter or grated Asian pear for fruitiness, or 1 teaspoon miso for depth. For gluten-free, use tamari and a gluten-free Worcestershire; for vegan, use mushroom-based oyster sauce or extra ketchup plus mushroom powder.