Roasting peppers, like in this Marinated Roasted Peppers recipe, can seem a fiddly thing to do, but the results are worth it. Removing the skins makes them easier to digest and the flesh sweeter.... Another plus is that made this way, they will keep in the fridge for up to a week.
Set the whole peppers directly on the racks of a gas burner with the flame on medium-high. Using tongs, rotate the peppers frequently until they are evenly charred and the skin has cracked in places.
Transfer the peppers to a bowl and cover with plastic, or transfer to a bag and seal (see Chef Tips). Let sit at room temperature for about 30 minutes or longer. Peel and rub the skins off with your fingers. Deseed the peppers. Run under water to remove any excess char.
In a bowl mix the roasted peppers with olive oil, vinegar, thyme, garlic, and salt. Let marinate in the refrigerator for at least four hours.
The best way to remove the skins is to pop the peppers into either a brown paper bag or plastic shopping bag. Then depending on the bag used, either fold or tie the top shut. Doing this allows the peppers to steam, which pushes the skin away from the flesh making them 100% easier to peel. If a bag is not handy, then put them in a bowl as directed in step 2. If champagne vinegar is not available, substitute with white wine vinegar or apple cider vinegar.