Final answer:
Nuts for Dacquoise should be pulverized into a fine powder and toasted to enhance their flavor before being folded into the dessert mixture.
Step-by-step explanation:
When making Dacquoise, nuts should be pulverized and toasted. Pulverizing the nuts—which typically means almonds, hazelnuts, or sometimes other nuts—into a fine powder allows them to easily mix with other dry ingredients such as sugar and flour. Toasting the nuts before grinding them enhances their flavor, giving the Dacquoise a richer taste. A food processor can be used to pulverize the nuts to the desired fineness. To incorporate them into the meringue-based dessert, they are folded in carefully to maintain the structure of the whipped eggs.