Cook the rice in
plenty of boiling salted water until just tender.
Drain, rinse with cold water and drain again.
Mix
with enough mayonnaise just to moisten. Spoon into a
ring on a large round plate (or press into a large
oiled ring mould (mold), then turn out on to the
plate).
Mix the grated vegetables with the oil,
lemon juice to taste, the caraway seeds and some
salt and pepper.
Toss well and spoon into the centre
of the rice. Garnish all round the edge with the
grapes.