I received a small sample of these in a Xmas hamper and decided I would like some more. So I ordered 500g. Since then I have added them to improve a variety of sandwiches. I find a short 'blast' in the microwave makes them easier to chew. They are rather too salty to chew on ther own but are good to enhance other savoury foods.
They come in a robust sealable bag that enables long storage without refrigeration. Therefore, when I have worked my way through the present 500g, I may order a 1000g batch to reduce the relative cost of postage.