There is a range of food products which consist of small, irregular and non-uniform particulate pieces which are solid but are predominantly consumed or handled in bulk, e.g. meringues, popcorn, nut clusters, noodles.
This range also covers very hard and brittle variable structures which fracture easily when deformed, e.g. cut, snapped, penetrated or compressed.
The primary issue of these types of samples is that because they are usually of varying sizes or are of non-homogeneous nature comparisons are difficult. They have a high variability from piece to piece within the same batch and require a sample set to be tested.