Authentic Mushroom Sisig

Name: Authentic Mushroom Sisig
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Yield: 4 serving
Ingredients: 1 pound Blue Oyster Mushrooms; 1 pound cremini mushrooms; 2-3 tablespoons olive oil; salt; 1 large red onion; ¼ Cup Vinegar; 2 Tablespoons Coconut aminos; 2 Tablespoons calamansi juice; 1 Tablespoon vegan mayonnaise; 1 Tablespoon chopped chives or green onion; red pepper flakes

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Prep Time
10 mins
Cook Time
10 mins
Total Time
30 mins
Servings
4
Calories
165 kcal
Course
Side Dish, Main Course
Cuisine
Filipino

Authentic Mushroom Sisig

Iris Warren

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Mushroom Sisig transforms humble fungi into a flavor-packed Filipino delicacy, balancing sharp vinegar, bright calamansi, and umami-rich mushrooms to create a plant-based masterpiece that honors both the dish's ancient salad origins and its modern sizzling incarnation, a versatile culinary chameleon equally at home as a refreshing cold appetizer or dramatic hot entrée.

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Ingredients

Servings

For the Mushrooms

1 pound Blue Oyster Mushrooms Provides meaty texture and won't shrink excessively
1 pound cremini mushrooms Adds earthy flavor and firm bite
2-3 tablespoons olive oil
salt asin and at paminta, to taste

For the Seasoning

1 large red onion pulang sibuyas, finely diced
¼ Cup Vinegar suka - Authentic Filipino vinegar is essential for proper flavor
2 Tablespoons Coconut aminos Adds umami and light color
2 Tablespoons calamansi juice katas ng kalamansi - Provides essential citrus tang
1 Tablespoon vegan mayonnaise Creates creaminess
1 Tablespoon chopped chives or green onion dahon ng sibuyas, plus extra for garnish
red pepper flakes Hot Sauce (sawsang maanghang), or Fresh Chopped Chili (siling tuyo) to taste (optional)

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Instructions

Start by finely dicing the red onions and placing them in a small bowl. Pour ¼ cup of Datu Puti vinegar over the onions and let them sit while you prepare the mushrooms, about 20 minutes until they turn pink. This mellows the raw onion flavor while adding a nice tangy brightness.
Preheat your oven to 375°F (190°C). Wash and thoroughly dry your mushrooms – this is important for proper roasting. Arrange the mushrooms in a single layer on a baking sheet, making sure not to overcrowd them. Use two baking sheets if needed. Drizzle approximately 2-3 tablespoons of olive oil over the mushrooms and season generously with salt and pepper.
Roast the mushrooms for 10 minutes, then take them out and flip them over. Continue roasting for another 10 minutes until they're golden brown and slightly crispy at the edges. Remove from the oven and let them cool to room temperature. Once cooled, chop the mushrooms into small, bite-sized pieces and transfer them to a large mixing bowl.
To the bowl of chopped roasted mushrooms, add 4 tablespoons of the pickled onions including some of the vinegar, 2 tablespoons coconut aminos, 2 tablespoons calamansi juice, 1 tablespoon vegan mayonnaise, and 1 tablespoon of chopped chives or green onion. If you want some heat, add your preferred amount of red pepper flakes, hot sauce, or fresh chilies. Mix everything thoroughly until all flavors are well combined. Taste and adjust the seasoning with salt, pepper, additional vinegar, or calamansi juice as needed. For best flavor, let the mixture rest for 5-10 minutes before serving.
For cold serving (like a salad), simply transfer the mixed sisig to a serving platter. Garnish with additional pickled onions and chopped chives or green onions. Serve with extra hot sauce or chili on the side for those who like more heat.
For hot serving on a sizzling skillet, heat an 8-inch cast iron skillet over medium-high heat until very hot. Drizzle a tablespoon of olive oil into the hot skillet. Add the prepared mushroom sisig mixture to the skillet and cook for approximately 2 minutes, stirring occasionally to heat everything thoroughly. Carefully place the hot skillet on a wooden board or heat-resistant surface. Garnish with additional pickled onions and chopped herbs. Serve immediately while the skillet is still sizzling for that authentic restaurant experience.

Notes

Mushroom Selection: Using a combination of mushrooms creates various textures, mimicking the textural complexity of traditional sisig
Thorough Drying: Ensuring mushrooms are completely dry before roasting prevents steaming and encourages browning
Temperature Control: The 375°F oven temperature is perfect for developing flavor without burning
Pickling the Onions: This step not only mellows the harshness of raw onions but infuses them with tangy notes that complement the dish
Flavor Layering: The combination of vinegar, calamansi, and coconut aminos creates depth without overwhelming the mushroom flavor
Serving Options: The flexibility to serve either cold or hot makes this dish perfect for any season or occasion