Step 1: Make a Cure
A cure is essentially a "dry brine." It's a rub based in salt, herbs, and spices. This is where you can get creative. The salt is the one you really have to control.
Start with weighing your duck. Let's say it's 4#. I convert that to grams as it makes the measurements easier. 4 x 454 g per lb = approx 2,000 g. You want no more than 3% salt, so do 60 grams of salt. That's your base.
Then add herbs, spices, and aromatics. Aromatics can be things like lemon zest, fresh rosemary (herb and aromatic), or thyme - things you can smell easily. Spices that play well with duck include red pepper flake, black pepper and even exotics like ginger or lavender.
Be creative but also don't go too far. You don't need much of each spice. I usually like just rosemary, thyme, lemon zest, a little allspice and clove, a little juniper, red peper flake, salt and sugar.
Step 2: Rub your cure on the duck.
Coat the duck liberally in the cure on all sides. Place it on a resting rack over a sheet tray. It will drip. Cover in plastic wrap and refrigerate for 24 hours.
Step 3: Rinse the cure off. Get a big pan of cold water and quickly rinse off 75% of the cure.
Step 4: Arrange duck into a baking pan. Warm your lard or oil to liquid state. Add wedges of lemon or fresh herbs to the pan. Pour the oil and cover the meat.
Step 5: Wrap it tight. Use plastic wrap (yes, in the oven) and foil. Or put parchment paper down first to keep the duck submerged, then wrap with plastic wrap, then foil. You are cooking really low heat so it won't melt.
Step 6: Bake at 225 degrees. This takes a while. Approx 4 hours. Until two sets of tongs can be used to pickup the duck and it essentially falls apart.
Step 7: Remove or vent foil, and refrigerate. Put in the refrigerator overnight to setup.
Step 8: Warm slightly and slowly. You are just trying to get the duck legs out of the gelled up fat the next day.
Step 9: Sear or broil. Serve your delicious duck confit.
It takes time but really isn't difficult. Save your leftover confit fat for a future use.
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