Between the first ladle of broth being added to a bowl and the garlic hitting sesame oil in a hot pan, there’s a specific moment when vegetarian ramen ceases to feel like a compromise and begins to feel like its own thing. It took several unsuccessful batches to get there, and to be honest, there was some doubt that any plant-based broth could match the quality of a good tonkotsu. The truth is that it can, but only if you start focusing on what vegetables do well instead of trying to mimic meat.
Umami is the foundation of any potent vegetarian ramen broth, and it’s easier to get from plants than most people realize. The obvious place to start is with dried shiitake mushrooms, which, when soaked and simmered slowly, release a depth that is truly surprising when you taste it for the first time. Another layer is added by kombu, the dried kelp used in traditional Japanese dashi, which has a background that is quiet but persistent, mineral-rich, and almost oceanic. Some cooks use tomato paste, which may sound odd, but it functions in a way that is difficult to describe until you try it. It completes the broth by adding a delicate sweetness and thickness that are typically only found in long-simmered bones.
Ginger and garlic cannot be compromised. They are added early; if time permits, they can be charred in a dry pan to soften their sharpness and add a smoky element that the broth truly needs. Vegetable stock, soy sauce, and a dash of mirin for a hint of sweetness are then added. It’s a straightforward base, but the depth quickly develops, especially when the broth is simmered on low heat for 30 minutes instead of boiling vigorously, which turns the broth flat and slightly bitter.
It gets interesting at miso. Every miso functions differently. White miso has a subtle sweetness. A richer broth benefits from the fermented intensity and heat that red miso adds. Instead of letting it boil, which destroys the flavor, many cooks blend both, whisking the paste into the warm broth at the very end. Although it’s tempting to overdo the miso, exercising restraint yields better results. Four servings typically require two tablespoons.
Although opinions on soy milk are divided, it is worth mentioning here as well. When added toward the end, it gives the broth a creamy, slightly rounded finish that is more akin to the opulent texture of a tonkotsu without any real pork fat. Kenji López-Alt of Serious Eats relies on blending roasted sweet potatoes into the broth to accomplish a similar effect, which may seem unlikely but works wonderfully. Some cooks also blend in roasted garlic, which naturally thickens the broth and adds a subtle, caramelized richness.
The importance of the toppings is greater than most people realize. Crispy tofu, miso-glazed carrots, soft-boiled eggs, and baby bok choy that have wilted in the hot broth right before serving all contribute texture and flavor. The noodles themselves should be added last, barely cooked but still bite-sized. The best ramen noodles are fresh ones. Dried ones are effective. Overcooking them is ineffective.
For ardent ramen purists, it’s still unclear if vegetarian ramen will ever completely replace the original. However, tasting a well-constructed bowl of it gives the impression that the question is less important than it once was.
