Bisou, Paris - Mystery margarita, describe the margarita you want, and it gets made.

Candelaria, Paris - Frozen margaritas in the taco restaurant, mezcals in the speakeasy. Strong!

El Taquito, Le Mans - Frozen, sweet and a huge glass.

Goofy Cafe, Les Arcs - Not spicy, even though it was claimed, gives you enough bravery to tackle a red run.