Caramelizing Onions (Piaz Dagh)

پیاز داغ (piaz dagh) — literally "hot onions" — is the backbone of Persian cooking. These deeply golden, almost crispy onions provide:

• •Sweetness — natural sugars caramelize
• •Depth — Maillard reaction creates complex flavors
• •Color — rich golden-brown base
• •Aroma — the smell that says "Persian kitchen"

Almost every khoresh starts here. Master this, master Persian stews.

Persian onions go darker and faster.

• •Heavy-bottomed pan (wide surface area)
• •Onions (yellow or white)
• •Neutral oil (vegetable, canola)
• •Salt
• •Patience (but not as much as you think)

Yellow onions — best all-purpose, good sugar content White onions — slightly sharper, works well Red onions — sweeter but muddy color (avoid for piaz dagh)

Amount: 1 large onion = about 1 cup sliced = ½ cup when caramelized

Step 1: Heat Oil Generously

• •Use more oil than you think — 3-4 tbsp per large onion
• •Medium-high heat
• •Oil should shimmer, not smoke

Step 2: Add Onions

• •Add all at once
• •Spread in even layer
• •Let sit 1-2 minutes without stirring (builds fond)

Step 3: First Stir

• •Stir to flip onions
• •Scrape any brown bits from bottom
• •Spread flat again
• •Repeat every 2-3 minutes

Step 4: Add Salt

• •After 5 minutes, add ½ tsp salt per onion
• •Salt draws moisture, speeds caramelization
• •Stir to distribute

Step 5: Watch the Color

Stages:

1. •Translucent (5 min) — just starting
2. •Light gold (10 min) — too early
3. •Medium gold (15 min) — good for some dishes
4. •Deep mahogany (20-25 min) — classic piaz dagh
5. •Crispy brown (25-30 min) — for garnish

Step 6: Finish

For stew base:

• •Remove when deep gold, some edges crispy
• •Proceed with recipe (add meat, spices, etc.)

For garnish:

• •Continue until crispy throughout
• •Remove to paper towel
• •Sprinkle with salt

If onions are browning too fast or catching:

1. •Add 2-3 tbsp water
2. •Scrape up fond (brown bits)
3. •Water evaporates, fond incorporates
4. •Continue cooking

This rescues burnt bits and adds flavor.

Piaz dagh keeps well:

• •Refrigerator: 1 week in airtight container
• •Freezer: 3 months
• •Store with cooking oil — keeps moist

Make extra and freeze in portions for quick stew starts.

• •Rice topping — crispy piaz dagh on adas polo
• •Eggs — add to scrambled eggs or kuku
• •Soup garnish — ash reshteh topping
• •Sandwich — on kabab sandwiches
• •Dips — fold into mast-o-khiar

1. •Same size onions — buy uniform onions for consistent slices
2. •Room temperature — cold onions lower oil temp
3. •Don't walk away — the line between perfect and burnt is thin
4. •Save the oil — onion-flavored oil is liquid gold
5. •Batch cook — make triple and freeze portions