Ingredients :

• Puffed rice cereal — Classic Kellogg’s Rice Krispies are the standard, but any brand will do. Avoid pre-chocolated or sugary versions—the chocolate comes later, no need to overdo it.
• Marshmallows — Go for mini marshmallows; they melt faster and more evenly. Large marshmallows work too, but you have to cut them into pieces—not very practical when the melting has started and everything gets sticky.
• Dark chocolate — 60-70% cocoa, no less. Low-end chocolate tends to bloom (turn white) quickly and be too sweet once melted. A Lindt Excellence bar or equivalent is more than enough.
• Fleur de sel — Not fine salt, not coarse salt. Fleur de sel has flat, light crystals that stay on the surface and crunch discreetly. It’s this precise contrast that makes the difference—other salts incorporate too much or too little.