Preparation by means of extrusion cooking of granules or powders from nuts
and/or oleaginous fruits and/or oil seeds, which are optionally and
partially defatted and/or dried in toto, the granules and powders being
intended in particular for instant drinks. More specifically, the
extrusion cooking method which is used in order to prepare the
highly-nutritional granules or powders allows for the introduction of a
high weight percentage (>/=40%) of the vegetable raw materials and for
the concentration of the active ingredients and natural nutriments
thereof.