Put all the ingredients in your blender (or in a large bowl, if using the immersion blender).
1 cup (about 7 oz) jarred roasted red bell peppers, drained, ½ cup (about 3.5 oz) pickled jalapeños (red or green), drained, ⅓ cup tomato paste, 2 cloves of garlic, 2 tsp sugar, 2 tsp apple cider vinegar (or white wine vinegar), 1 tsp salt (or more), 2 tsp crushed chilli flakes (or more), 2 tbsp sriracha chilli sauce (optional, but recommended for flavor and heat)