Onions are a versatile and flavorful topping that adds depth and texture to ramen. Known for their slightly sweet and pungent taste, onions can be used in various forms, including raw, sautéed, caramelized, or pickled, each offering a unique flavor profile.
When added to ramen, onions provide a delightful crunch and a layer of complexity that enhances the overall taste of the dish. Their natural sweetness and umami qualities complement the savory broth and other toppings, making onions a popular choice among ramen enthusiasts. Whether used as a garnish or a main ingredient, onions bring a robust and aromatic dimension to ramen, elevating the dining experience.
Usage and Selection
Onions are used in ramen in several ways, depending on the desired flavor and texture.
Thinly sliced raw onions can be sprinkled on top for a crisp, sharp bite, while sautéed or caramelized onions add a rich, sweet, and mellow flavor. Pickled onions offer a tangy and vibrant contrast that can brighten up the dish.
When selecting onions for ramen, choose firm bulbs with dry, papery skins and no signs of sprouting or soft spots. Yellow onions are versatile and commonly used, but red onions can add a colorful and slightly milder flavor. For the best results, slice the onions thinly and evenly, ensuring they cook uniformly. Freshly prepared onions will provide the most vibrant flavor and texture, so it’s best to use them soon after cutting.
Types of Ramen Using Onions
Onions are a versatile topping that can enhance various types of ramen, adding both flavor and texture. Here are some popular types of ramen that commonly include onions:

Shoyu Ramen
Shoyu ramen uses a clear and salty soy sauce broth and is considered fairly balanced, with many comforting flavors.

Miso Ramen
Miso Ramen originates from Hokkaido and features a robust miso-based broth, as well as ground pork, corn, and a blend of savory toppings.

Tonkotsu Ramen
Tonkotsu ramen is creamy and intensely savory. It’s based on a rich pork bone broth and uses toppings like chashu and mushrooms.

Vegan Ramen
Vegan ramen (or plant-based ramen) is often made with fresh and dried mushrooms, garlic, ginger, mirin, and miso paste.