Different recipes will have different peppers, but this recipe calls for a combination of red bell pepper, green bell pepper, jalapeño peppers, as well as ground black pepper, and ground cayenne pepper. But feel free to customize it to whatever peppers you have. Maybe your garden produced lots of yellow bell peppers or Serrano chilies. I recommend staying with 2 sweet bell peppers and one or two hot peppers. Though, if you like it really spicy, feel free to up the heat!