Ordoor Gharch (اردور قارچ) — Persian-Style Crispy Mushroom Hors d’Oeuvre

• 400 gButton mushrooms, cleaned and dried (Trim stems; keep small mushrooms whole and halve large ones)
• 120 gAll-purpose flour (About 1 cup, spooned and leveled)
• 4 gBaking powder (About 1 teaspoon)
• 6 gCurry powder (About 2 teaspoons; mild or hot to taste)
• 5 gFine salt (About 1 teaspoon, plus more to finish if desired)
• 1 gGround black pepper (About 1/2 teaspoon)
• 12 gGarlic, finely grated or pressed (About 3 cloves)
• 80 gOnion, finely grated (About 1/2 medium onion; squeeze lightly if very watery)
• 160 mlWater (Cold; add gradually for a thick, clingy batter)
• 600 mlVegetable oil (For frying; neutral oil such as sunflower or canola)

Instructions

1. 1

   Clean the mushrooms by wiping with a damp paper towel, then dry thoroughly so the batter adheres. Trim any tough stem ends. Leave small mushrooms whole and cut larger ones into halves or quarters for even cooking. Set aside at room temperature while you prepare the batter (about 5 minutes).

2. 2

   In a mixing bowl, whisk together the flour, baking powder, curry powder, salt, and black pepper for 30 seconds to distribute the leavening and spices evenly. Add the grated garlic and grated onion and stir to combine, breaking up any clumps so the aromatics are evenly suspended in the dry mix.

3. 3

   Pour in the cold water gradually, whisking constantly, until you have a thick batter that coats a spoon and falls in slow ribbons. This typically takes the full 160 ml, but stop early if your onion is very juicy. Rest the batter for 10 minutes to hydrate the flour and improve crispness.

4. 4

   Heat the vegetable oil in a deep pot to 175°C (350°F). Use a thermometer if possible; otherwise, a small drop of batter should sizzle immediately and float. While the oil heats, line a tray with a wire rack (preferred) or paper towels to drain the fried mushrooms without steaming.

5. 5

   Working in batches, dip mushrooms into the batter, letting excess drip back into the bowl for 2–3 seconds. Carefully lower them into the oil and fry 3–4 minutes, turning once, until deeply golden and crisp. Keep the oil between 170–180°C (340–355°F) by adjusting the heat.

6. 6

   Transfer the fried mushrooms to the rack and let them drain for 2 minutes. Fry remaining batches, allowing the oil to return to temperature between batches (about 1 minute). Taste and, if needed, sprinkle an additional 1–2 g salt while hot. Serve immediately for maximum crunch.