Marinate the goat in oregano, cumin, garlic, and 1 cup of Chicha or beer for 1 hour.
In a food processor, add tomatoes, cilantro, aji de panca, and passion fruit juice.
Blend until smooth. Set aside.
Heat up cooking oil in a Dutch oven over high heat. Add in the goat. Sear on all sides for 5 minutes.
Stir in the red onion, bell pepper, and achiote paste. Sauté for 5 minutes.
Add in the rest of the Chicha or beer and the tomato/cilantro purée. Bring to a boil. Add in the allspice and grated panela. Cover. Reduce heat to medium low.
Simmer for 2 hours. Simmer for another 15-20 minutes uncovered until the sauce thickens.