Peruvian Roast Chicken

⏲ ~44 min total · prep 16 · cook 28 · 4 servings

Lunch⏱ 100 min total🔥 2.0g net carbs

By the KFI Test Kitchen · Tested & approved by Jason Lieu, KFI recipe editor

Published Sep 15, 2026 · Updated Sep 15, 2026

Peruvian Roast Chicken

Ingredients

Instructions

  1. Blend the lime juice, 6 garlic cloves, aji amarillo paste, cumin, oregano, 1 1/2 tsp of the salt, and the olive oil in a blender until smooth.
  2. Loosen the chicken's skin with your fingers and rub two-thirds of the marinade directly over the meat under the skin; brush the rest over the outside. Marinate at room temperature 30 minutes (or refrigerate up to 24 hours).
  3. Heat the oven to 450°F with a rack in the lower third. Pat the skin dry and sprinkle with the remaining 1/2 tsp salt.
  4. Lay the chicken breast-side up on a rimmed half-sheet pan and roast 20 minutes.
  5. Rotate the pan and continue roasting 25-30 minutes, until the breast registers 155°F, the thigh 175°F, and the skin is deep golden brown.
  6. While it roasts, blend the mayonnaise, cilantro, jalapeño, garlic clove, and a pinch of salt into a bright green sauce.
  7. Rest the chicken 10 minutes, carve along the breastbone and leg joints, and serve with the cilantro sauce spooned over.

Why this recipe works

Tips for making this recipe well

Pat the skin dry anyway

Even after 30 minutes in marinade, blot the skin before it meets the oven, then sprinkle the remaining half teaspoon of salt. Wet skin steams. Dry skin at 450°F turns deep golden brown.

Rotate at 20 minutes

Sheet pans brown unevenly in most ovens, hot toward the back. The mid-roast rotation is what keeps one leg pale and the other charred from happening. Total time lands between 45 and 50 minutes.

Two readings, one bird

Pull the chicken when the breast reads 155°F and the thigh 175°F. The 10-minute rest carries the breast the rest of the way while the dark meat finishes tender. Check both spots, every time.

Blend the sauce while it roasts

The last 25 minutes of roasting is free time. Mayonnaise, cilantro, jalapeño, and the last garlic clove become the green sauce in under a minute. A pinch of salt and it holds until carve time.

Marinate overnight if the day is full

The recipe allows 24 hours refrigerated, and overnight is the better version anyway. Set the bird on a sheet pan to catch drips. Take it out while the oven heats so it is not ice-cold going in.

Serving suggestions

Carve along the breastbone and leg joints, arrange on a platter, and bring the green sauce to the table in a bowl rather than spooning it timidly. This is a chicken that wants a heavy hand with the sauce. At 2.0 net carbs a serving, sides can be real food: a cabbage slaw, roasted broccoli, or lettuce cups for making small wraps with the sauce. Leftover thigh meat with more of that sauce over greens is a lunch worth planning for.

Storage and meal prep

Cool the carved meat and refrigerate it for 3 to 4 days in a covered container, with the sauce stored separately so the skin side stays as crisp as storage allows. Reheat gently in a skillet or eat the meat cold, which suits this marinade well. The sauce keeps 3 to 4 days too and stays green for about two. Cooked chicken freezes 2 to 3 months; thaw overnight and reheat with a splash of broth. Skip freezing the sauce, since mayonnaise breaks.

Variations worth trying

Frequently asked questions

What is aji amarillo paste, and where do I find it?

It is a fruity, moderately hot Peruvian chili pepper sold as a paste in Latin grocery stores and online. It is the backbone of the marinade's character. If it is genuinely unavailable, the marinade still works with the garlic, cumin, and oregano doing more of the work.

Why is there mayonnaise in the sauce?

Peruvian aji verde is mayonnaise-based, and the mayo gives the sauce its body and pale green color. Thinned with cilantro, jalapeño, and garlic, it reads as a proper sauce rather than a condiment. It also costs almost nothing against the 2.0 net carbs.

Can I marinate it longer than 30 minutes?

A dry rub seasons the surface, but lime juice and garlic in the marinade travel deeper, seasoning the meat all the way through instead of only the outer edge. Pat the skin dry before roasting either way.

Is 155°F in the breast enough?

Poultry is fully cooked at 165°F, and the 10-minute rest carries the breast from 155°F up to that mark while it sits. Check the thickest part after resting if you want confirmation. The 175°F thigh is a tenderness target, not a safety one.

Do I need a roasting rack?

No. The recipe lays the flattened bird directly on a rimmed half-sheet pan, which is how the underside catches color, and the skin side stays up and crisp. A rack only adds cleanup here.

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