In a bowl, mix together salted pretzels, almonds, nuts and fleur de sel. Heat the butter, sugar, honey, cayenne pepper and cinnamon in a small pan, stirring constantly. Put the mixture in the bowl, mix, spread onto a baking tray lined with baking paper.
For approx. 12 mins. in the centre of an oven preheated to 180°C, stir the mixture once using a wooden spoon during cooking. Remove from the oven, leave to cool.