Rau Muong Xao Toi / Stir Fried Water Spinach with Garlic

Growing up, vegetables were rarely something I got excited about, and like most kids, I would go out of my way to avoid them whenever I could. But there was always one dish that never needed convincing. Rau muong xao toi, or stir-fried water spinach with garlic! This simple dish was the rare vegetable I genuinely looked forward to eating. The crisp hollow stems, the tender greens, and the way everything soaked up that deeply aromatic garlic flavor made it impossible to resist. It never felt like I was being told to eat my vegetables. It just tasted good. Even now, this remains one of my favorite vegetable dishes of all time. It is fast, comforting, and always brings me back to my childhood. Best of all, it comes together in under ten minutes, making it the perfect side dish to round out a traditional Vietnamese homestyle meal or com gia dinh.

What Is Rau Muong

Rau muong is the Vietnamese name for water spinach, a leafy green vegetable commonly used across Southeast Asian cooking. You may also hear it called morning glory, ong choy, kangkong, or swamp spinach, depending on the region and language. Rau muong has long hollow stems and narrow pointed leaves. The stems are crisp and juicy, while the leaves are soft and tender once cooked. When prepared properly, it has a clean vegetal flavor that pairs incredibly well with garlic, fish sauce, and umami-rich seasonings. Texturally, this vegetable is what makes the dish so special. The stems stay lightly crunchy while the leaves absorb all the seasoning in the pan.

Fun fact. In some US states, water spinach is actually illegal to grow or sell because it is considered an invasive species. If you cannot find it fresh near you, Asian grocery stores are still your best bet, especially Vietnamese or Chinese markets.

How To Prep The Rau Muong

Proper prep is the key to getting restaurant-quality rau muong xao toi at home. This is how it was taught to me growing up, and it makes a noticeable difference in texture and color.

Separate the Leaves and Stems

Start by separating the leaves from the stems. Growing up, my mom would have me pick each leaf off by hand, one by one. As an adult, I usually take a knife and cut them instead to save time. You do not need to be perfect here. The goal is to separate most of the leaves from the thicker stems so they can be blanched separately.

Blanch Quickly

Bring a pot of well-salted water to a boil. Add the stems first and blanch for 10 to 15 seconds. Then add the leaves and blanch for another 5 seconds. Immediately transfer everything into an ice bath to stop the cooking process. This step keeps the rau muong bright green and prevents it from becoming limp. Once cooled, squeeze out as much excess water as possible. This is important so the stir-fry does not become watery.

How To Make Rau Muong Xao Toi

Prep

This dish moves fast once you start cooking, so have everything prepped and ready. Prepare the water spinach as described above and set it aside. Then, thinly slice a handful of garlic cloves into garlic chips. You can also mince the garlic if you prefer, but slicing creates better texture and flavor in my opinion.

Cook

Heat a pan over medium-high heat and add a splash of oil. Add the garlic chips and fry for 1 to 2 minutes until lightly golden and fragrant. Be careful not to burn them.

Add the prepared water spinach to the pan, then season with sugar, MSG, fish sauce, and black pepper. Toss everything together quickly until the greens are evenly coated and heated through. This should only take a couple of minutes.

Serve

Transfer the rau muong xao toi to a plate and serve immediately. This dish is best enjoyed as part of a full Vietnamese family meal alongside rice, a protein, and maybe a simple soup. It is humble, fast, and deeply comforting.