Roast Poussin with Crisp Pommes Frites and Garlic Aioli

Preheat the oven to 220°C (428°F) with an oven rack positioned in the center.

Place the whole poussins on the dedicated poultry cutting board and pat the skin and interior cavities completely dry using paper towels to ensure crisp browning and minimize cross-contamination risk.

Season the internal cavity of each bird with 1g fine sea salt and 0.5g black pepper, then place 2 crushed unpeeled garlic cloves and 2 sprigs of fresh thyme inside each poussin cavity.

Truss both poussins tightly using kitchen twine by crossing the drumsticks over the cavity opening and pinning the wingtips securely against the backbone.

Rub the skin of both birds thoroughly with 20ml olive oil, then season the exterior evenly with the remaining 4g fine sea salt and 1g black pepper.

Set the trussed birds breast-side up on the rack inside the roasting pan and roast in the oven at 220°C (428°F) for 35 minutes until the internal temperature reaches at least 74°C (165°F) measured in the thickest part of the thigh without touching bone.

Transfer the roasted poussins to a clean poultry cutting board and rest uncovered for 10 minutes to allow juices to redistribute through the muscle fibers without steaming the crisp skin.

Peel the russet potatoes on the produce cutting board and square off the edges with a chef knife, slicing the flesh into uniform batons measuring 7mm (1/4 inch) in thickness.

Place the cut potato batons into a medium mixing bowl filled with cold water and soak for 20 minutes to leach excess surface amylose starch, then drain thoroughly.

Spread the drained potato batons across a clean work surface lined with paper towels and pat firmly until entirely dry on all sides.

Pour 1000ml peanut oil into the large Dutch oven, secure the deep-fry thermometer to the rim, and heat over medium flame until the oil reaches 150°C (300°F).

Lower half of the dried potato batons into the 150°C (300°F) oil with the wire spider skimmer and blanch for 5 minutes until fully tender when pierced with a knife tip, taking care not to let them take on any brown color, then repeat with the second batch.

Lift the blanched fries out of the oil using the wire spider skimmer, spread them in a single layer on the baking sheet fitted with a wire cooling rack, and allow them to cool for 15 minutes.

Combine the 3 peeled minced garlic cloves and 2g fine sea salt in the mortar and pestle, pounding firmly until ground into a smooth, translucent garlic paste.

Transfer the crushed garlic paste into a clean medium mixing bowl, add the room-temperature egg yolk and 10ml freshly squeezed lemon juice, and whisk vigorously until pale and frothy.

While whisking continuously and vigorously, begin drizzling the combined extra virgin olive oil and neutral vegetable oil drop by drop into the egg yolk base, gradually increasing to a thin, steady stream once the emulsion stabilizes, until a thick, glossy aioli forms.

Increase the heat under the large Dutch oven to bring the peanut oil to 190°C (375°F) as registered on the deep-fry thermometer.

Gently transfer the cooled, blanched fries into the 190°C (375°F) oil in two separate batches and fry for 3 minutes until rigid, blistered, and deep golden brown.

Remove the fries using the wire spider skimmer, transfer immediately into a clean dry medium mixing bowl, and toss vigorously with 4g fine sea salt while sizzling hot.

Cut the kitchen twine from the rested poussins, position one whole poussin on each serving plate beside a generous mound of hot fries, spoon the garlic aioli into ramekins alongside, and serve immediately.