Italian White Cabbage Slaw with Porcini and Truffle Oil
A refined Italian slaw that transforms humble cabbage into something luxurious. Tender white cabbage is dressed with a umami-rich vinaigrette infused with rehydrated porcini mushrooms, finished with a drizzle of truffle oil and shards of Parmigiano-Reggiano. The result is earthy, tangy, and deeply savory—a sophisticated side that elevates any meal. Serve immediately or within a few hours for best texture.
- Prep
- 20 min
- Cook
- —
- Wait
- 15 min
- Total
- 35 min
- Makes
- 4 servings (about 4 cups)
Steps
Before you start
- Have all ingredients measured and ready
- Slice the cabbage as thinly as possible using a mandoline or sharp knife for the best texture
- Use a fine sieve to strain the porcini soaking liquid to remove any grit
- Bring the white wine vinegar to room temperature before combining with the dressing
Bloom the porcini
- Place the chopped porcini mushrooms in a small heatproof bowl and pour the hot water over them.
- Let sit for 10 minutes to fully rehydrate and soften.
- The liquid will become dark and aromatic.
- After 10 minutes, carefully strain the porcini through a fine-mesh sieve set over a bowl, catching the soaking liquid below.
- Finely chop any larger pieces of rehydrated porcini and reserve both the mushrooms and their strained liquid.
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Ready when: Porcini are soft and plump; soaking liquid is dark brown and fragrant
Tip: Don't discard the soaking liquid—it's pure umami and is essential to the dressing.
Build the vinaigrette
- In a medium bowl, whisk together the red wine vinegar, 3 tablespoons (45 ml) of the reserved porcini soaking liquid, Dijon mustard, minced garlic, and a pinch of sea salt.
- Whisk until the mustard dissolves and the mixture is homogeneous.
- Slowly drizzle in the extra virgin olive oil while whisking to emulsify, then whisk in the black truffle oil.
- Taste the dressing and adjust with a little more sea salt and cracked black pepper as needed.
- The dressing should be tangy, umami-forward, and balanced.
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Ready when: Dressing is emulsified, smooth, and uniformly colored, with no visible oil separation
Tip: Whisk in the oils slowly to create a proper emulsion; too fast and the dressing may break.
Prepare the cabbage
- Using a mandoline set to the thinnest setting (or a very sharp knife), slice the cored white cabbage into paper-thin ribbons.
- Work carefully over a large mixing bowl to catch all the shreds.
- Once all the cabbage is sliced, place it in the bowl and sprinkle lightly with sea salt.
- Toss gently with your hands to distribute the salt evenly; this will help release a tiny amount of liquid and soften the cabbage very slightly over the next 5 minutes.
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Ready when: Cabbage releases a small amount of liquid at the bottom of the bowl; shreds are pliable but still crisp
Tip: Use a mandoline for the thinnest, most elegant slice; if using a knife, draw it toward you at a slight angle for thinner pieces.
Combine and dress
- Add the finely chopped rehydrated porcini mushrooms to the sliced cabbage.
- Pour the truffle-mushroom vinaigrette over the cabbage and porcini, and toss gently but thoroughly using two forks or salad servers, making sure every shred gets coated.
- Let the slaw sit for 5 minutes at room temperature, tossing once more halfway through, so the flavors meld and the cabbage softens slightly.
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Ready when: Cabbage is evenly glossy and beginning to wilt slightly; dressing coats every shred
Tip: Toss gently to avoid bruising the delicate cabbage; use two forks rather than a spoon for better control.
Finish and serve
- Transfer the dressed slaw to a serving bowl or platter.
- Top with shaved or shredded Parmigiano-Reggiano and a light scatter of fresh chopped parsley if using.
- Finish with a light grind of black pepper.
- Serve immediately, while the cabbage is still crisp on the outside and tender on the inside, and before it sits too long and becomes limp.
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Ready when: Slaw is plated with cheese and garnish in place
Tip: Add the Parmigiano just before serving so it stays dry and flaky rather than wilting into the dressing.
Good to know
Tips
- Use a mandoline to slice the cabbage as thin as possible—thin slices soften faster and allow better dressing absorption while staying delicate.
- Strain the porcini soaking liquid carefully through a fine sieve to remove any grit or sand, which is common in dried mushrooms.
- Don't skip the emulsification step in the dressing; whisking the oils in slowly prevents the vinaigrette from breaking and ensures a silky coating.
- Serve this slaw immediately or within 15–20 minutes of assembly; it's best when the cabbage still has a slight crisp bite rather than becoming completely soft.
Make ahead
Prepare the porcini dressing up to 2 hours ahead and store covered at room temperature. Slice and salt the cabbage no more than 1 hour before serving (it will begin to wilt if salted longer). Assemble the slaw no more than 15–20 minutes before serving to preserve the crisp texture of the cabbage.
Storage & reheating
Best served fresh within 2 hours of assembly. Leftover slaw (without the cheese topping) keeps refrigerated for up to 1 day, though the cabbage will soften. The dressing keeps refrigerated in an airtight container for up to 3 days. Do not freeze.
Substitutions
- black truffle oil → white truffle oil or additional extra virgin olive oil infused with a small grating of fresh truffle (if available). Black truffle oil is earthy and bold; white truffle oil is more delicate and floral. Regular olive oil loses the luxurious truffle note but keeps the slaw light and fresh.
- dried porcini mushrooms → 2 oz (60 g) fresh cremini or porcini mushrooms, very thinly sliced and tossed with 1 tbsp lemon juice. Fresh mushrooms add a different texture and lack the concentrated umami of dried porcini, so increase the Dijon mustard to ¾ tsp for more savory depth.
- red wine vinegar → white wine vinegar or aged balsamic vinegar. Red wine vinegar is slightly rougher and more assertive; white wine vinegar is delicate and cleaner; balsamic adds sweetness and depth.
- Parmigiano-Reggiano cheese → Pecorino Romano or Grana Padano. Pecorino is sharper and saltier; Grana Padano is milder and slightly sweeter. Both are excellent Italian hard cheeses that shave beautifully.
