Calamari isn’t kosher, but king oyster mushroom stems sliced into rings make a convincing stand-in. The rings are coated in seasoned flour, egg and herbed panko, fried until golden, and served with a quick garlicky marinara and lemon.
Why King Oyster Mushrooms
King oyster mushrooms have thick, dense stems with a mild flavor and a slightly chewy texture similar to squid. Slice the stems into rounds and use a small cutter or knife to remove the center, making rings. Regular mushrooms are too soft and won’t work. Fry at a steady 350°F in small batches, and drain on a rack so they stay crisp.
Kosher Notes
Squid and other seafood without fins and scales aren’t kosher, which is why this dish uses mushrooms. It’s pareve, so it works as an appetizer before a meat or dairy meal. Check that your panko and canned tomatoes carry a reliable hechsher.
Make-Ahead
Coat the rings up to 4 hours ahead and refrigerate them, then fry just before serving. The marinara keeps for 5 days in the fridge.

Ingredients
What I use for this recipe
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Method
- Heat olive oil in a medium saucepan over medium heat. Add minced garlic and cook for 30 seconds until fragrant.
- Add crushed tomatoes, oregano, basil, salt, and red pepper flakes. Bring to a simmer and cook for 15 minutes, stirring occasionally.
- Remove from heat and stir in lemon juice. Keep warm while preparing the calamari rings.
- Remove caps from king oyster mushrooms and reserve for another use. Slice the thick stems crosswise into 1/2-inch thick rings.
- Set up three shallow dishes: In the first, combine flour, garlic powder, onion powder, paprika, salt, and pepper. In the second, place beaten eggs. In the third, mix panko breadcrumbs with oregano and basil.
- Heat oil in a heavy pot or deep fryer to 375°F. Use a candy thermometer to monitor temperature.
- Working with a few rings at a time, dredge each mushroom ring in seasoned flour, dip in beaten eggs, then coat thoroughly with seasoned breadcrumbs. Press gently to help coating stick.
- Fry coated rings in batches for 2-3 minutes until golden brown and crispy. Don't overcrowd the pot.
- Remove with a slotted spoon and drain on paper towels. Season immediately with a pinch of salt.
- Serve hot mock calamari rings immediately with warm marinara sauce for dipping. Garnish with fresh basil leaves if desired.
Notes
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