Chocolate, caramel, fleur de sel and beer brownies

Ingredients

• 8 ounces ( 225g ) Toblerone dark chocolate (8 big pieces), chopped
• 3/4 cup caramel chips
• 6 tbsp melted butter
• 1 cup unbleached flour
• 3/4 cup unsweetened cocoa powder
• 1 tsp instant coffee
• 1 generous pinch of salt
• 4 large eggs (room temp.)
• 1 cup white sugar
• 1 cup La Résolution beer from Unibroue, shelf temperature (or another black beer with hints of coffee / caramel)
• 1/4 cup pecan nuts, coarsely chopped
• 1 cup semi-sweet chocolate chips
• Fleur de sel