Japanese Black Garlic Oil (Mayu)
A staple of Kumamoto-style ramen, this obsidian-black oil is crafted by frying garlic in three distinct stages to create a smoky, complex, and umami-rich condiment.
Mayu is much more than just burnt garlic oil. It is a traditional Japanese aromatic oil that uses a tiered frying process to capture the full spectrum of garlic flavors, from sweet and nutty to deep and charred. When drizzled over a rich Tonkotsu pork broth, it provides a striking visual contrast and a layer of smoky sophistication that defines Kyushus famous ramen culture.
Ingredients
- 100 g fresh garlic, sliced
- 100 ml lard
- 100 ml toasted sesame oil
Instructions
- 1Combine ingredients for Mayu

In a small pot, combine the lard, sesame oil, and fresh garlic slices. Ensure the garlic is sliced uniformly so it cooks evenly. This cold start method allows the garlic to gradually release its moisture and infuse the oils with flavor as the temperature rises.
Tip: Uniform slicing is essential; pieces that are too thin will burn and turn bitter before the thicker slices have had a chance to properly toast. - 2Heat and evaporate moisture

Place the pot over medium low heat. As the oil warms the garlic will begin to bubble vigorously and release steam. This is the moisture evaporating; once the heavy white steam subsides the browning process will begin in earnest.
Tip: The oil will darken significantly as you go so rely on the color of the garlic slices themselves rather than the appearance of the oil to judge doneness. - 3Remove the light golden garlic

Once about one third of the garlic slices turn a pale golden brown hue use a mesh strainer to remove them from the oil. Setting these aside preserves the subtle sweetness of the toasted garlic to balance the char later.
Tip: Watch the steam; once the heavy white steam subsides it indicates that most of the moisture has left the garlic and the browning process will accelerate. - 4Remove the medium brown garlic

Continue frying the remaining garlic until the next third reaches a rich medium brown color. Strain these out immediately; these pieces provide the nutty depth that bridges the sweet and charred flavors.
Tip: Have a small bowl or tray ready nearby so you can quickly drop the strained garlic and return to the pot before the remaining garlic overcooks. - 5Char the final batch until black

Keep the final portion of garlic in the pot until it reaches a deep, charred black color. This stage provides the signature smoky aroma and intense color of traditional Japanese Mayu. Once black, remove the garlic immediately to stop the frying process.
Tip: You are looking for a charcoal-like appearance. This provides the burnt flavor profile that characterizes Kyushu-style Tonkotsu ramen.