Heat oil in large pot.
Lightly salt and pepper chicken and brown, once browned, remove and set aside.
Saute onion, garlic and aji amarillo until fragrant.
Blend cilantro and beer (a magic or nutribullet is great for this).
Add cilantro/beer blend, chicken stock and salt to pot and stir.
Return chicken and bring to boil.
Reduce heat to medium and let simmer until chicken is cooked (about 30 minutes).
Remove chicken, there should be approximately 6 cups of liquid, add more water if needed.
Add washed rice and frozen mixed vegetables.
Bring to boil, cover and reduce to low.
Cook rice for 25 minutes or until done.
Serve with chicken and lime wedges.