Crispy Duck Fat Fries with Spiced Homemade Ketchup
Soak the cut potatoes in cold water for thirty minutes to pull out excess starch — this is the difference between fries that crisp up and ones that stick together. Fry them twice: once at 325°F to cook the inside, then again at 375°F to shatter the outside. Season with coarse salt the instant they leave the oil, and serve alongside the house-made spiced ketchup with its warm cinnamon-clove kick.
A truly superior French fry is a study in texture and patience. While plenty of us are happy enough with the standard drive-thru version, the cook who wants something unforgettable knows the secret lies in the choice of fat. Duck fat produces a crispier, less greasy fry that stays wonderfully rigid even as it cools — perfect for a sophisticated presentation on the shared table.
The process begins with removing excess starch. Soaking the cut potatoes in cold water for at least thirty minutes ensures a cleaner fry and prevents them from sticking together in the pot. A thorough blotting with paper towels is the only way to guarantee a truly crisp crust.

Crispy Duck Fat Fries with Spiced Ketchup
Ingredients
Method
- Cut the scrubbed potatoes into uniform planks, then into strips.
- Submerge the strips in a bowl of cold water for at least 30 minutes to remove excess starch, which ensures a cleaner fry and prevents sticking.
- In a small saucepan over low heat, whisk together the tomato paste, brown sugar, red wine vinegar, mustard, cinnamon, cloves, allspice, and ¼ cup of water.
- Simmer the mixture for 10 minutes until the sugar has dissolved and the sauce is homogenous.
- Season with salt and pepper.
- Drain and blot the potato strips completely dry with paper towels.
- Heat duck fat in a heavy skillet to 325°F using a candy thermometer.
- Fry the potatoes in batches for 5 minutes until just beginning to turn golden.
- Transfer to a paper towel-lined baking sheet.
- Increase the oil temperature to 375°F.
- Return the pre-cooked potatoes to the hot fat and fry for an additional 5 minutes until they are deep golden brown, rigid, and perfectly crisp.
- Transfer the fries to a clean baking sheet and season immediately with a generous sprinkle of coarse salt.
- Serve warm alongside the house-made spiced ketchup.
The Heart of the Table
Soak the cut potatoes in cold water for thirty minutes to pull out excess starch — this is the difference between fries that crisp up and ones that stick together. Fry them twice: once at 325°F to cook the inside, then again at 375°F to shatter the outside. Season with coarse salt the instant they leave the oil, and serve alongside the house-made spiced ketchup with its warm cinnamon-clove kick.
The Art of the Host
- Heavy-duty cast-iron skillet
- Clip-on candy thermometer
- Stainless steel wire skimmer
- Heavy wooden cutting board
- Uniform ceramic dipping bowls
- Professional 8-inch chef's knife
Neighborly Grace
- The Presentation: Serve the fries immediately following the second fry to ensure peak rigidity. Pile them high on a large platter and nestle the spiced ketchup in the center to encourage communal grazing.
- The Pour: Offer an ice-cold, crisp Pilsner or a dry sparkling cider. The bright carbonation provides a clean palate cleanser that cuts through the richness of the duck fat.
- The Vibe: Embrace the unhurried energy of a backyard terrace at high noon. Set a relaxed pace by throwing open the doors and allowing the natural atmosphere of the estate to set a nostalgic tone for the afternoon.