Crispy meringue cakes are best made during the winter months when household humidity is low, as meringue quickly absorbs moisture from humid air and become sticky.
Try to buy nuts where you can sample them before purchasing. A fresh nut has a light pleasant nutty smell and a full nutty taste without any bitterness. Shelled nuts kept at room temperature quickly become rancid. They’ll keep well, refrigerated, for up to 3 months or frozen for up to 1 year