Golden Tempura-Style Battered Mushrooms with Zesty Garlic Aioli

🌍 Cuisine: American
🏷️ Category: Snacks & Light Bites
⏱️ Prep: 20 minutes
🍳 Cook: 15-20 minutes
👥 Serves: 4-6 servings

📝 About This Recipe

Transform the humble button mushroom into a gourmet sensation with this ultra-crispy, golden-brown batter that shatters with every bite. By utilizing a chilled club soda base, we create a light, airy coating that perfectly encases the juicy, umami-rich mushrooms within. This dish is a masterclass in texture and a quintessential favorite for those who crave a sophisticated take on classic pub-style comfort food.

🥗 Ingredients

Main Ingredients

  • 1 pound White Button or Cremini Mushrooms (cleaned and stems trimmed)
  • 4 cups Vegetable or Canola Oil (for deep frying)

The Crispy Batter

  • 1.5 cups All-purpose Flour (divided into 1 cup for batter and 1/2 cup for dredging)
  • 1/4 cup Cornstarch (adds extra crunch)
  • 1 teaspoon Baking Powder (for lift and aeration)
  • 1 teaspoon Garlic Powder
  • 1/2 teaspoon Smoked Paprika (for a hint of color and depth)
  • 1.25 cups Club Soda or Seltzer Water (must be ice-cold)
  • 1 teaspoon Sea Salt (plus extra for seasoning)
  • 1/2 teaspoon Black Pepper (freshly ground)

Zesty Garlic Aioli

  • 1/2 cup Mayonnaise (full fat for best flavor)
  • 2 cloves Garlic (finely minced or grated)
  • 1 tablespoon Lemon Juice (freshly squeezed)
  • 1 tablespoon Fresh Parsley (finely chopped)

👨‍🍳 Instructions

  1. 1

    Begin by cleaning your mushrooms with a damp paper towel. Avoid soaking them in water, as mushrooms are porous and will become soggy when fried.

  2. 2

    Prepare the Garlic Aioli by whisking together the mayonnaise, minced garlic, lemon juice, and chopped parsley in a small bowl. Cover and refrigerate to allow the flavors to meld.

  3. 3

    In a large, heavy-bottomed pot or Dutch oven, heat 4 cups of oil to 375°F (190°C). Use a deep-fry thermometer to ensure the temperature is consistent.

  4. 4

    Place 1/2 cup of all-purpose flour in a shallow bowl. This will be used to dredge the mushrooms so the batter sticks effectively.

  5. 5

    In a separate large mixing bowl, whisk together the remaining 1 cup of flour, cornstarch, baking powder, garlic powder, smoked paprika, salt, and pepper.

  6. 6

    Slowly pour the ice-cold club soda into the dry ingredients. Whisk gently until just combined; a few small lumps are perfectly fine and actually help with texture.

  7. 7

    Dredge a handful of mushrooms in the dry flour bowl, shaking off any excess.

  8. 8

    Dip the floured mushrooms into the cold batter, ensuring they are completely and evenly coated.

  9. 9

    Carefully drop the battered mushrooms into the hot oil one by one. Do not overcrowd the pot, as this will drop the oil temperature and result in greasy mushrooms.

  10. 10

    Fry the mushrooms for 3-5 minutes, turning occasionally with a slotted spoon, until they reach a deep golden brown and are incredibly crispy.

  11. 11

    Use a spider strainer or slotted spoon to remove the mushrooms and place them on a wire rack set over a baking sheet to drain. This prevents the bottoms from getting soggy.

  12. 12

    Immediately sprinkle with a pinch of sea salt while they are still hot.

  13. 13

    Repeat the process with the remaining mushrooms, allowing the oil to return to 375°F between batches.

  14. 14

    Serve immediately while piping hot alongside the chilled Garlic Aioli.

💡 Chef's Tips

Always use ice-cold club soda; the temperature shock between the cold batter and hot oil creates the signature crispy bubbles. Do not wash mushrooms under running water; use a damp cloth to prevent them from absorbing excess moisture which causes oil splatter. Maintain your oil temperature at 375°F; if it drops too low, the batter will absorb oil and become heavy and greasy. For a spicy kick, add a teaspoon of cayenne pepper or your favorite hot sauce directly into the wet batter. Use a wire cooling rack instead of paper towels for draining to keep the air circulating and the coating crisp.

🍽️ Serving Suggestions

Pair with a crisp, cold Lager or a dry Pilsner to cut through the richness of the fried batter. Serve as a shared appetizer alongside a platter of fresh celery sticks and carrot ribbons. Offer a variety of dipping sauces like Spicy Sriracha Mayo, Ranch dressing, or a Tangy Balsamic Reduction. Arrange on a wooden board garnished with fresh lemon wedges and a sprinkle of chopped chives for a rustic presentation.