This well known sandwich-erie is located in the Marche des Enfants Rouges. It is lucky my Airbnb was a couple of minutes across the road. It seems like a nice market to buy things to eat then or take away for a picnic later. There's quite a few options but the most popular with both French and foreign-language speakers is Chez Alain Miam Miam.
The queue on this Saturday around 1pm went for 50minutes. There's a lot of queueing and really only one sandwich or one galette can be made at a time. So be prepared for the wait and bring a book.
The two main options are the galette and sandwich. The sandwich is the more famous one but as you see other people receiving their galettes it certainly tempts you that way. Luckily I tried both.
Galette Fraicheur €9.5 is a buckwheat base with loads of fresh salad, tomato, parsley, cured ham, loads of parmesan and even more loads of basil. It's a wonderful fresh and healthy flavour mix. The problem I have with it is that galettes are best eaten warm and crisp but the wet salads make it cold and soggy when you eat it.
The sandwich €9 is a hot pressed beast with salad, cooked onions (10kg per day), mushroom, tomato, avocado and your choice of cheese (I liked cantal better) and filling (I chose the warm chicken). It is reminiscent of that drunk 3am kebab in terms of warmth, size and satisfaction but also healthier, better quality ingredients and a more fresh (rather than meat salt) flavour. It is very satisfying.
I wouldn't go back there knowing what the queues are like, but I'd stop by in the area and take a peak to see how long a sandwich might be...