Abstract: The invention relates to a process comprising (a) providing a quantity of plant material; (b) heating the material of (a) in aqueous medium to a temperature of 75 to 105° C.; (c) physically disrupting the material of (b); (d) processing the physically disrupted material of (c) to enrich for cells and/or cell clusters; and (e) drying the material of (d). The invention also relates to a product, which comprises at least 30% or more intact plant cells, which comprises 15% or less water by weight, which has a particle size in the range 75-500 ?m, characterised in that the product comprises at least 30% resistant starch as a proportion of total starch. The invention also relates to foodstuffs.