Heat the olive oil in a large pot over medium heat. Stir in the red pepper, yellow pepper, green pepper, orange pepper, onion and celery. Cook until tender. Place pork and beef in the pot and cook until evenly brown. Drain off fat.
Mix chillies, chopped tomatoes, green chillies, tomato puree, kidney beans, garlic, lime juice, tequila and beer into the pot. Season with chilli powder, salt and pepper. Bring to the boil. Reduce heat to medium-low and simmer 5 hours.
Jalapeno chillies can be purchased in speciality markets or online. Alternatively, substitute in Scotch bonnet chillies to taste.
Tinned diced green chillies can be purchased in Mexican speciality shops or online.