Sous Vide Duck Confit

Ingredients

Component	Spec	Notes
Duck legs	2 to 4 duck legs (thigh + drumstick attached)	About 300 to 350 g each.
Whole duck option	1 whole duck (4.5 to 6 lb / 2 to 2.7 kg)	If breaking down from whole bird.
Kosher salt	1.5 to 2% of leg weight	For about 1.3 kg legs: 20 to 24 g.
Cracked black pepper	1 tsp	Cure aromatic.
Thyme sprigs	4 to 6	Cure aromatic.
Garlic cloves	3 to 4, lightly crushed	Cure aromatic.
Bay leaves	2, crumbled	Cure aromatic.
Sugar (optional)	2 g	Optional cure balance.
Duck fat for bag	15 to 30 g per leg	Add at bagging stage.

Timing Plan

Window	Action
T-50 to T-48 hr	Optional whole-duck breakdown and trim setup.
T-48 to T-24 hr	Cure legs (12 to 24 hr window; 24 hr for full penetration).
T-24 to T-21 hr	Rinse, dry, and air-dry in fridge (1 to 3 hr, or overnight).
T-21 to T-3 hr	Bag and sous vide cook at 68 C / 155 F (16 to 24 hr, 18 hr ideal).
T-3 to T-2.5 hr	Ice-bath chill in sealed bag (20 to 30 min minimum).
T-2.5 hr onward	Hold refrigerated sealed until needed for downstream recipe.

Overall Timing

Minimum practical: about 30 hours (12 hr cure + 16 hr cook + chill and handling).

Full-production window: about 50 hours (24 hr cure + 24 hr cook + chill and handling).

Recommended planning target: 42 to 46 hours using 24 hr cure and 18 to 20 hr cook.

Part 1 - If Starting From a Whole Duck

STEP 1

Break Down

Remove legs at the hip joint, leaving thigh and drumstick attached. Trim excess loose skin and surface fat.

Reserve carcass for stock.
Reserve trimmed fat for rendering.
Pat legs dry thoroughly.

Checkpoint: clean leg quarters with dry surface and minimal loose fat.

Part 2 - Cure

STEP 2

Cure the Legs

Weigh legs and apply salt at 1.5 to 2% of total weight. Rub evenly over entire surface, then add pepper, thyme, garlic, and bay.

Place skin-side down on a tray and refrigerate 12 to 24 hours.

Goal: moisture draw, mild firming, controlled seasoning penetration.
Do not exceed 24 hours unless lowering salt percentage.

Checkpoint: legs look firmer with visible surface moisture extraction.

STEP 3

Rinse and Dry

Rinse briefly under cold water and pat completely dry.

Air-dry uncovered in refrigerator 1 to 3 hours, or overnight.

Skin should feel dry and slightly tacky.

Checkpoint: surface is dry enough to bag without wet pooling.

Part 3 - Sous Vide Cooking

STEP 4

Bag

Place 1 to 2 legs per vacuum bag. Add 15 to 30 g duck fat per leg and optional small thyme sprig.

Seal snug but not crushing.
Do not add additional salt or liquid.

Checkpoint: full vacuum with no visible air pockets.

STEP 5

Cook

Cook at 68 C / 155 F for 16 to 24 hours. 18 hours is ideal.

68 C gives full collagen conversion.
Texture stays silky but structured.
Strands separate cleanly without mushiness or stringiness.

Checkpoint: leg feels tender and gelatin-rich when pressed in bag.

STEP 6

Chill

Ice bath immediately in sealed bag, chill fully for at least 20 to 30 minutes, then refrigerate sealed until needed.

Stops carryover.
Sets gelatin.
Preserves texture integrity.

Checkpoint: bag liquid is visibly gelatinized after full chill.

Texture Control Comparison

Temp (C)	Time (hr)	Texture Outcome	Recommended Use
65	18 to 24	Slightly firm, less collagen breakdown	Sliceable presentations
67	16 to 20	Tender but structured	Hybrid slice and shred
68	16 to 24	Silky, fully converted collagen, defined strands	Ideal for ragu
70	12 to 16	Looser fibers, more rustic	Stews
72	8 to 12	Very soft, shreddy	Pulled-style dishes

Troubleshooting Matrix

Problem	Likely Cause	Adjustment
Meat stringy	Temperature too low (66 C or below)	Increase to 68 C
Meat mushy	Temp too high or over 24 hours	Reduce time to 16 to 18 hours
Too salty	Cure above 2% or cured over 24 hours	Reduce salt to 1.5%
Flat flavor	Cure too short	Extend to full 24 hours
Greasy texture	Excess fat in bag	Reduce added fat next batch
Inconsistent texture	Uneven bag sealing	Ensure full vacuum and no air pockets

Yield

Per leg: about 200 to 250 g usable meat.

Storage

Sealed in bag: up to 5 days refrigerated.
Frozen: up to 3 months.