Preheat the oven to 460°F (240°C). Tray up the prepared chilies, bell peppers, tomatoes, red onions, garlic cloves, and coriander seeds, ensuring they are spread out in a single layer. Roast in the oven for about 15-20 minutes until the vegetables char and soften. When ready remove from the oven to cool down for 20 minutes.
When the vegetables have cooled down a bit, transfer them to a pot or food processor. Add ground coriander, ground cumin, black pepper, fresh coriander, lime juice, white wine vinegar, and salt to taste. Blend the mix until you achieve a slightly chunky salsa consistency. If the mixture feels too thick, you can thin it out with some pickle juice or water.
After blending, give the salsa a taste. Adjust the seasoning if needed, perhaps adding more salt, lime juice, or pickle juice depending on your preference.
Once satisfied with the flavours, transfer the salsa to a jar or bowl and let it chill in the refrigerator for at least an hour. This resting period allows the flavours to meld beautifully. When ready, serve your salsa chilled, pairing it with tortilla chips, tacos, or any dish that calls for a burst of flavour. Remember, using jalapeño pickle juice can add an extra tangy kick to your salsa, but if you don't have it on hand, water or other pickle juice works just fine.