Cah Kangkung with Oyster Sauce and Tempeh Recipe

Introduction

Cah Kangkung with Oyster Sauce and Tempeh is a quintessential Indonesian dish that embodies the vibrant flavors and culinary richness of Southeast Asian cuisine. This dish is renowned for its simplicity, freshness, and the harmonious blend of savory, spicy, and umami tastes. The key ingredient, kangkung or water spinach, provides a tender yet slightly crunchy texture that absorbs the flavors of the oyster sauce and aromatics beautifully. The addition of tempeh introduces a nutty flavor and satisfying crunch, making the dish not only delicious but also a good source of plant-based protein.

This recipe is perfect for busy weeknights when you crave something quick, nutritious, and full of flavor. It can be served as a standalone dish or as a side to complement rice and other Indonesian or Southeast Asian dishes. At Love With Recipes, we aim to bring culinary joy and authenticity to your kitchen, and this Cah Kangkung with Oyster Sauce and Tempeh is no exception. Its balance of fresh vegetables, rich sauces, and optional crispy tempeh makes it a versatile addition that can easily be adapted to various dietary needs and preferences.

Time

Preparation Time: 10 minutes
Cooking Time: 10 minutes
Total Time: 20 minutes

Needed Equipment

• Wok or large deep skillet – essential for quick stir-frying and even heat distribution
• Chef’s knife – for chopping vegetables and aromatics
• Cutting board – a stable surface for prep work
• Measuring spoons – for accurate measurement of sauces and seasonings
• Small bowl – for mixing sauces or holding prepped ingredients
• Cooking spoon or spatula – for stirring and tossing ingredients
• Steaming or frying pan (optional) – if preparing tempeh separately before adding
• Peeler (optional) – for peeling garlic or other ingredients if necessary
• Kitchen tongs or chopsticks – for handling greens and delicate ingredients

Tags

• Indonesian cuisine
• Vegetarian-friendly
• Quick weeknight dinner
• Vegetable stir-fry
• Seafood flavor (oyster sauce)
• Healthy
• Plant-based protein

Serving Size

Serves approximately 2-4 people, depending on portion size and whether it is served as a main or side dish.

Difficulty Level

Easy – suitable for beginner cooks with basic stir-frying skills and familiarity with Indonesian ingredients.

Allergen Information

This dish contains shellfish-derived oyster sauce, which is not suitable for those with shellfish allergies or vegans. Tempeh is made from soybeans, so individuals with soy allergies should avoid it. Always check labels for gluten content if gluten sensitivity is a concern.

Dietary Preference

• Vegetarian: Yes, if oyster sauce is substituted with vegetarian-friendly alternatives such as mushroom sauce or soy sauce.
• Vegan: Not traditionally, due to oyster sauce; however, vegan versions of oyster sauce can be used.
• Gluten-Free: Possible if using gluten-free soy or mushroom sauce and gluten-free tempeh.

Course

Side dish / Main course (if served with rice or noodles)

Cuisine

Indonesian / Southeast Asian

Ingredients

Instructions

Step 1: Prepare the ingredients

Begin by assembling all necessary ingredients. Carefully wash the kangkung thoroughly under cold running water, ensuring to remove any dirt, grit, or impurities. To do this effectively, hold the water spinach by the stems and rinse each bunch under a gentle stream, then drain and set aside. For the vegetables, peel and finely chop the shallot, small onion, and tomatoes into small, uniform pieces. Slice the red chili peppers and bird’s eye chilies into thin rings or small pieces, depending on your preferred heat level and presentation. If using fresh garlic, mince it finely; if opting for garlic powder, keep it ready. Prepare the tempeh by slicing it into thin strips or small cubes, if you plan to include it during cooking. Having all ingredients prepped and within reach will streamline the cooking process.

Step 2: Sauté aromatics to build flavor

Heat a wok or large skillet over medium heat. Add a tablespoon of cooking oil—vegetable, peanut, or canola oil works well—and wait until it shimmers. Add the chopped shallot and small onion first, sautéing for about 1-2 minutes until they soften and release their aroma. Next, introduce the chopped red chili peppers and bird’s eye chilies. Sauté for an additional 1-2 minutes, stirring constantly to prevent burning. The goal is to develop a fragrant base that infuses the oil with spicy, sweet, and savory notes, which will serve as the foundation of your dish. Be cautious with the heat level; if you prefer milder flavors, reduce the amount of bird’s eye chili or remove the seeds. The aromatics should be fragrant and slightly softened but not browned or burnt.

Step 3: Incorporate oyster sauce and seasonings

Add the garlic powder (or fresh minced garlic) to the pan, stirring quickly to release its aroma—about 30 seconds. Follow this by pouring in a generous splash of oyster sauce, approximately 1-2 tablespoons, depending on your taste preference. Stir well to combine, allowing the sauce to coat the aromatics evenly. Cook for 1-2 minutes, stirring constantly, to let the flavors meld and the sauce to thicken slightly. This step is crucial as it imparts the umami richness characteristic of the dish. If you’re using vegetarian oyster sauce or mushroom sauce, add it at this stage. Adjust the amount of sauce based on your desired level of flavor intensity.

Step 4: Cook the kangkung greens

Add the cleaned kangkung to the pan in batches if necessary, tossing gently to coat the greens with the aromatic sauce. The water content of kangkung will cause it to wilt quickly—usually within 1-2 minutes—so stir consistently to ensure even cooking. If needed, add a small splash of water (about 1-2 tablespoons) to facilitate the cooking process and prevent sticking. Cover the pan loosely with a lid and let the kangkung simmer for about 2-3 minutes until tender but still vibrant green and slightly crunchy. Do not overcook, as kangkung can become mushy if left on the heat for too long. The greens should be wilted but retain some bite, enhancing the texture and flavor of the dish.

Step 5: Season and adjust flavors

Remove the lid and taste the dish. Adjust salt and sugar according to your preference. Usually, a pinch of salt enhances the umami, while a teaspoon of sugar balances the flavors and adds subtle sweetness. If you wish for spicier notes, add more chopped chilies or a dash of chili sauce. Stir everything together thoroughly to ensure the seasoning is evenly distributed. If you like a slightly saucier dish, add a little more water or oyster sauce and cook uncovered for another minute to reduce the sauce slightly. The goal is to achieve a harmonious blend of flavors—spicy, savory, and slightly sweet—highlighted by the freshness of the greens.

Step 6: Incorporate tempeh and finish the dish

If using tempeh, gently stir the sliced tempeh into the greens during the last minute of cooking. This step warms the tempeh through and allows it to absorb some of the flavors without losing its texture. If you prefer crispy tempeh, you can fry the slices separately until golden and crispy before adding them to the dish. This will add a delightful crunch and additional flavor contrast, but for the classic style, adding it at the end keeps it tender and integrated with the greens.

Step 7: Serve immediately

Remove the pan from heat and transfer the Cah Kangkung with Oyster Sauce and Tempeh to a serving dish. Serve hot, ideally paired with steamed jasmine rice or other staple grains. Garnish with additional sliced chilies or chopped scallions if desired. This dish is best enjoyed fresh to fully appreciate the vibrant flavors and textures. It can also be complemented with other Indonesian dishes such as fried chicken, sambal, or grilled seafood for a complete meal experience.

Preparation Tips

• Choosing the right kangkung: Look for fresh, vibrant green water spinach with firm stems. Avoid wilted or yellowing leaves for the best texture and flavor.
• Handling heat levels: Adjust the amount of bird’s eye chili according to your spice tolerance. Remove seeds for milder heat or leave them in for authentic fiery flavor.
• Tempeh preparation: For crispy tempeh, pan-fry or bake slices until golden. For a softer texture, include raw or steamed slices during the final cooking stages.
• Flavor balancing: Taste and adjust seasonings before serving. A splash of lime juice or a sprinkle of fried shallots enhances the overall flavor profile.
• Vegetarian adjustments: Substitute oyster sauce with vegetarian mushroom sauce or soy sauce to cater to dietary preferences.

Nutritional Information

Tips and Tricks

• Use fresh ingredients: Fresh water spinach and vegetables yield the best flavor and texture.
• Control the spice: Adjust the number and type of chilies to suit your heat preference.
• Enhance umami: Add a splash of fish sauce or a pinch of MSG for deeper flavor, if desired.
• Optimize cooking: Keep the stir-fry high heat and quick tossing to maintain vibrant color and crunchy texture.
• Make ahead: Prepare and chop all ingredients in advance for quick assembly during busy days.

Add-ons

• Fried shallots or garlic for garnish
• Chopped scallions or cilantro for fresh flavor
• Fried or crispy tempeh for added texture
• Additional chili sauce or sambal for extra heat

Side Dishes

• Steamed jasmine rice or fragrant basmati rice
• Indonesian sambal or chili paste
• Fried tofu or tempeh slices
• Grilled seafood or chicken skewers
• Pickled vegetables or acar (Indonesian pickles)

Improvements

• Incorporate other vegetables like bean sprouts, bok choy, or bell peppers for variation.
• Add a splash of coconut milk during cooking for a creamier, richer sauce.
• Use homemade oyster sauce or mushroom-based alternatives for more natural flavor and dietary preferences.
• Experiment with different chili types or spice blends to customize heat levels and flavor profiles.

Save and Store

If you have leftovers, store the Cah Kangkung with Tempeh in an airtight container in the refrigerator for up to 2 days. Reheat gently in a wok or microwave, adding a splash of water or oil to revive the moisture. Due to the delicate greens, it is best enjoyed fresh, but reheating still preserves much of its flavor. Avoid freezing, as the texture of kangkung can become mushy upon thawing.

FAQ

Can I make this dish vegan?

Yes, substitute the oyster sauce with a vegan mushroom or soy-based sauce. Ensure all other ingredients, including tempeh, are vegan-friendly. The dish remains flavorful and satisfying without animal products.

What if I can’t find water spinach?

You can substitute with spinach, Swiss chard, or bok choy, but note that these greens have different textures and flavors. Adjust cooking time accordingly to avoid overcooking the substitute greens.

Is this dish spicy?

It can be spicy depending on the amount and type of chilies used. Adjust the heat by removing seeds or reducing the number of bird’s eye chilies. For milder versions, omit the bird’s eye chili entirely.

How do I make crispy tempeh?

Slice tempeh thinly, steam or boil for 10 minutes to remove bitterness, then pan-fry in oil until golden and crispy. Drain on paper towels before adding to the dish.

Conclusion

Cah Kangkung with Oyster Sauce and Tempeh embodies the essence of Indonesian home-cooking—quick, flavorful, and nutritious. This dish beautifully balances the freshness of greens with the umami richness of oyster sauce and the satisfying crunch of tempeh. Its versatility makes it suitable for various dietary needs, and its simple preparation process encourages home cooks of all skill levels to explore traditional flavors with confidence. At Love With Recipes, we believe that cooking should be an enjoyable journey of discovery, and this recipe offers plenty of room for customization and experimentation. Whether you’re new to Indonesian cuisine or a seasoned enthusiast, this dish promises to delight and inspire your culinary adventures.