Our delicious Wholegrain Buckwheat super seed Rice Cakes are simply made with wholegrain brown rice puffed into a light texture, ideal for lunch or as a guilt free snack. This means it is not only a source of fibre but it is contains 100% natural ingredients and is 100% wholegrain. Our delicious Wholegrain Buckwheat super seed Rice Cakes are simply made with wholegrain brown rice puffed into a light texture, ideal for lunch or as a guilt free snack. This means it is not only a source of fibre but it is contains 100% natural ingredients and is 100% wholegrain.